K163087 · Ixensor Company , Ltd. · NBW · Nov 2, 2017 · Clinical Chemistry
Device Facts
Record ID
K163087
Device Name
PixoTest Blood Glucose Monitoring System
Applicant
Ixensor Company , Ltd.
Product Code
NBW · Clinical Chemistry
Decision Date
Nov 2, 2017
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 862.1345
Device Class
Class 2
Attributes
Software as a Medical Device
Indications for Use
The PixoTest Blood Glucose Monitoring System is comprised of PixoTest Glucose Test Strip, PixoTest Uni-Clip, and the PixoHealth App as the display component of the system. The PixoTest Blood Glucose Monitoring System is intended to be used for the quantitative measurement of glucose in fresh capillary whole blood obtained from the fingertip. The PixoTest Blood Glucose Monitoring System is intended for self-testing outside the body (in vitro diagnostic use) by people with diabetes at home as an aid to monitor the effectiveness of diabetes control. The system is intended for single person use only and should not be shared. It is not intended for use in the diagnosis of or screening for diabetes and is not intended for use on neonates.
Device Story
System uses smartphone camera to measure blood glucose; consists of PixoTest Glucose Test Strip with integrated lancet, PixoTest Uni-Clip, and PixoHealth App. User applies capillary blood to test strip; glucose oxidase reaction produces color change on reagent pad. Uni-Clip attaches strip to iPhone (5, 5S, 6, 6S) camera lens. App captures photograph of color change; processes image to calculate glucose concentration. Results displayed on smartphone screen within 8 seconds. Intended for home self-testing by patients. Benefits include convenient monitoring of diabetes control via mobile device. System requires manual cleaning/disinfection of phone and clip after each use to prevent pathogen transmission.
Clinical Evidence
User performance study conducted with 105 lay users testing their own capillary blood on iPhone 5S and 6S. Results compared to YSI 2300 laboratory analyzer. For glucose <75 mg/dL, 100% of results were within ±15 mg/dL. For glucose ≥75 mg/dL, 100% of results were within ±20% of the reference method.
Technological Characteristics
Reflectance photometry; glucose-oxidase reagent chemistry; 1.8 μL sample volume; measuring range 40-500 mg/dL; 8-second measurement time; smartphone-based (iPhone 5/5S/6/6S) display via PixoHealth App; connectivity via smartphone integration; single-use test strips with integrated lancet.
Indications for Use
Indicated for quantitative measurement of glucose in fresh capillary whole blood from the fingertip for self-testing by people with diabetes at home to monitor diabetes control. Not for diagnosis or screening of diabetes; not for use on neonates.
Regulatory Classification
Identification
A glucose test system is a device intended to measure glucose quantitatively in blood and other body fluids. Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolism disorders including diabetes mellitus, neonatal hypoglycemia, and idiopathic hypoglycemia, and of pancreatic islet cell carcinoma.
Special Controls
*Classification.* Class II (special controls). The device, when it is solely intended for use as a drink to test glucose tolerance, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9.
Predicate Devices
Roche Diagnostics Corporations Accu-Chek Active System (k021827)
Submission Summary (Full Text)
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1
510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION
DECISION SUMMARY
ASSAY AND INSTRUMENT COMBINATION TEMPLATE
A. 510(k) Number:
k163087
B. Purpose for Submission:
New device
C. Measurand:
Capillary whole blood glucose
D. Type of Test:
Quantitative amperometric assay (Glucose oxidase)
E. Applicant:
iXensor Company Ltd.
F. Proprietary and Established Names:
PixoTest Blood Glucose Monitoring System
G. Regulatory Information:
1. Regulation section:
21 CFR 862.1345, Glucose test system
2. Classification:
Class II
3. Product code:
NBW, System Test, Blood Glucose, Over the Counter
4. Panel:
Clinical Chemistry (75)
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H. Intended Use:
1. Intended use(s):
See indications for use, below.
2. Indication(s) for use:
The PixoTest Blood Glucose Monitoring System is comprised of PixoTest Glucose Test Strip, PixoTest Uni-Clip, and the PixoHealth App as the display component of the system.
The PixoTest Blood Glucose Monitoring System is intended to be used for the quantitative measurement of glucose in fresh capillary whole blood obtained from the fingertip.
The PixoTest Blood Glucose Monitoring System is intended for self-testing outside the body (in vitro diagnostic use) by people with diabetes at home as an aid to monitor the effectiveness of diabetes control. The system is intended for single person use only and should not be shared. It is not intended for use in the diagnosis of or screening for diabetes and is not intended for use on neonates.
3. Special conditions for use statement(s):
- All parts of the kit are considered biohazardous and can potentially transmit infectious diseases, even after you have performed cleaning and disinfection. Your smartphone may also be considered biohazardous due to the presence of blood.
- This system is not for screening for or diagnosis of diabetes mellitus.
- Inaccurate results may occur if the patient is severely dehydrated, in shock, or in a hyperosmolar state (with or without ketosis).
- This system is not for use on critically ill patients.
- Alternative Site Testing (AST) testing was not evaluated in this device.
- Do no use at altitudes greater than 9843 ft.
- The meter does not work in sunlight. It will not return results and cannot be used under sunlight, indirect sunlight, in the shade, or next to the window with direct sunlight. You should not purchase this meter if you will need to use it in these conditions. Do not perform the test if you are unable to read your iPhone
- Not for neonatal use.
- Abnormally low hematocrit levels below (<20%) may produce falsely high readings and abnormally high hematocrit (>60%) may produce false low readings. If you do not know your hematocrit level please consult your healthcare professional.
- The battery life needs to be over 30% before using the PixoTest BGMS. If the battery is below 30%, an error will appear and the glucose measurement test cannot be started.
- This device is not intended for use in healthcare of assisted-use settings such as hospitals, physician offices, or long-term care facilities because it has not been
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cleared by the FDA for use in these settings, including for routine assisted testing or as part of glycemic control procedures. Use of this device on multiple patients may lead to transmission of Human Immunodeficiency Virus (HIV), Hepatitis C Virus (HCV), Hepatitis B Virus (HBV), or other bloodborne pathogens.
- For in vitro diagnostic use only.
- For over-the-counter use and single-patient use only
- PixoTest Glucose Test Strip is for single use; it should be used once only.
- Due to the risk of spreading blood born infections, clean phone after every blood test.
- The components of this system are for single patient use. Do not share them with anyone including other family members! Do not use on multiple patients.
4. Special instrument requirements:
iPhone models 5, 5S, 6, 6S
PixoTest Glucose Test Strip
I. Device Description:
The iXensor PixoTest BGMS consists of the following devices:
1) PixoTest Glucose Test Strip with Integrated Lancet Cartridge (single-use)
2) PixoTest Control Solutions (2 levels – 1 and 2)
3) PixoTest Standard Card
4) PixoTest Uni-Clip
5) PixoHealth App
6) Requires compatible smartphone (iPhone 5/5S/6/6S)
iXensor provides the following kits:
1) Starter (5 Pcs) Kit – includes PixoTest Standard Card, PixoTest Uni-Clip, and 5 Pcs PixoTest Glucose
2) 10 Pcs Kit – includes PixoTest Standard Card and 10 Pcs PixoTest Glucose
The iXensor PixoTest Blood Glucose Monitoring system is comprised of a test strip with an integrated lancing device, that is attached to a clip (the uni-clip accessory) that holds the cartridge over the camera of a mobile device (iPhone 5, 5S, 6, or 6S). Blood glucose is measured using the hardware camera on the iPhone 5, 5S, 6, or 6S in conjunction with the PixoTest Glucose Test Strip with Integrated Lancet Cartridge and PixoTest Uni-Clip. A plastic clip holds the test cartridge over the camera lens. A drop of fresh capillary blood is added to the test strip where a line forms in response to glucose in the blood on the test strip. A photograph is taken of the color change on the test strip and an iOS application uses the properties of the line to generate a blood glucose concentration. The PixoTest Control Solutions and PixoTest Standard Card are used to verify that the camera on the phone is operating properly.
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J. Substantial Equivalence Information:
1. Predicate device name(s):
Roche Diagnostics Corporations Accu-Chek Active System
2. Predicate 510(k) number(s):
k021827
3. Comparison with predicate:
| Similarities & Differences | | |
| --- | --- | --- |
| Item | Device iXensor PixoTest BGMS for the iPhone 5, 5S, 6, and 6S | Predicate Roche Accu-Chek Active System (k021827) |
| Indications for Use | For the quantitative measurement of glucose in capillary whole blood as an aid to monitor the effectiveness of diabetes control by people with diabetes | Same |
| Test Principle | Reflectance photometry | Same |
| Sample Type | Capillary whole blood from the fingertip | Capillary whole blood |
| Sample Volume | 1.8 μL | 1-2 μL |
| Alternative Site Testing | N/A | Forearm, calf, thigh, upper arm, palm |
| Measuring Range | 40-500 mg/dL | 10-600 mg/dL |
| Measuring Time | 8 seconds | 5 seconds |
| Hematocrit | 20-60% | 30-55% |
| Control Solution | 2 Levels; 1 and 2 | 2 Levels; Low and High |
| Test Strip Reagent | Glucose Oxidase | Glucose Dehydrogenase |
| Compatible Device/OS | iPhone 5/5S/6/6S; iOS 8 or above | N/A, Meter |
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| Similarities & Differences | | |
| --- | --- | --- |
| Item | Device
iXensor PixoTest BGMS
for the iPhone 5, 5S, 6, and 6S | Predicate
Roche Accu-Chek Active System
(k021827) |
| Power Supply | iPhone 5/5S6/6S: Built-in rechargeable lithium-ion battery | Meter: 1 type CR 2032 or equivalent lithium battery |
| Battery Life | N/A | 1000 tests |
| Memory Capacity | 1000 blood glucose test results with date and time | 200 blood glucose test results with date and time |
| Coding Procedure | Code Key | Same |
## K. Standard/Guidance Document Referenced (if applicable):
EN ISO 14971:2012 Medical devices - Application of risk management to medical devices (ISO 14971:2007, Corrected version 2007-10-01)
EN 62304:2006/AC:2008 Medical device software - Software life-cycle
## L. Test Principle:
iXensor PixoTest BGMS is a device that utilizes smartphone technology in conjunction with reflectance photometry and glucose-oxidase chemical reaction testing principles to measure the glucose level in human blood. A small drop of blood is applied to the eyelet on top of the disposable PixoTest Glucose test strip with integrated lancet cartridge. The blood sample is then transferred to and absorbed by the test strip’s glucose-oxidase impregnated reagent pad, which reacts with the glucose to produce a color change. The intensity of the color change is proportional to the glucose concentration present in the blood sample as detected by the camera on the mobile phone by using a clip that holds the test cartridge in place for analysis. The results are displayed on a phone application that is proprietary to the iXensor products. After 8 seconds, the blood glucose measurement result is displayed on the smartphone screen.
## M. Performance Characteristics (if/when applicable):
The testing described below was performed on an iPhone 5S and iPhone 6S as representative models for the iPhone 5, 5S, 6 and 6S. The sponsor provided justification and demonstrated that the components of the phones for each claimed platform were identical with respect to the performance of their device.
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# 1. Analytical performance:
# a. Precision/Reproducibility:
# Within-Run (Repeatability) with iPhone 5S
Within-run precision studies were performed using venous whole blood samples with 5 concentrations of glucose (40-50, 51-110, 111-150, 151-250, 251-400 mg/dL). Samples were tested in replicates of ten on the iPhone 5S with the Pixo System with each of three lots of test strips and 10 meters for a total of 300 tests per glucose concentration. Results are summarized below:
| Glucose Level (mg/dL) | Lot | Mean (mg/dL) | SD (mg/dL) | CV (%) |
| --- | --- | --- | --- | --- |
| 40-50 | 1 | 46.21 | 2.97 | 6.42 |
| | 2 | 45.28 | 2.77 | 6.13 |
| | 3 | 45.43 | 2.91 | 6.41 |
| 51-110 | 1 | 81.11 | 3.28 | 4.05 |
| | 2 | 80.85 | 3.26 | 4.03 |
| | 3 | 80.86 | 3.15 | 3.90 |
| 111-150 | 1 | 127.37 | 4.39 | 3.44 |
| | 2 | 127.83 | 4.66 | 3.65 |
| | 3 | 127.2 | 4.91 | 3.86 |
| 151-250 | 1 | 185.13 | 6.77 | 3.66 |
| | 2 | 185.28 | 6.60 | 3.56 |
| | 3 | 18593 | 7.50 | 4.03 |
| 250-400 | 1 | 331.85 | 7.27 | 2.19 |
| | 2 | 333.28 | 7.54 | 2.26 |
| | 3 | 331.66 | 7.52 | 2.27 |
# Intermediate Precision with iPhone 5S
Intermediate (between run) precision was evaluated using three levels of glucose control solutions, 3 test strip lots, and 10 meters. Each control solution level was measured once a day for 10 days with each meter and test strip lot, for a total of 100 replicates per control solution level per test strip lot for a total of 300 replicates for each glucose control level. Testing was performed on the iPhone 5S with the Pixo System. Results are summarized below:
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| Control Solution Level (mg/dL) | Lot | Mean (mg/dL) | SD (mg/dL) | CV (%) |
| --- | --- | --- | --- | --- |
| 40 – 60 | 1 | 55.35 | 2.94 | 5.31 |
| | 2 | 55.77 | 2.73 | 4.89 |
| | 3 | 55.33 | 2.67 | 4.82 |
| 96 – 144 | 1 | 123.14 | 4.49 | 3.65 |
| | 2 | 123.15 | 4.12 | 3.35 |
| | 3 | 123.9 | 4.41 | 3.56 |
| 280 – 420 | 1 | 397.68 | 10.93 | 2.75 |
| | 2 | 397.07 | 11.44 | 2.88 |
| | 3 | 395.46 | 10.84 | 2.74 |
# Within-Run (Repeatability) with iPhone 6S
Within-run precision studies were performed using venous whole blood samples with 5 concentrations of glucose (40-50, 51-110, 111-150, 151-250, 251-400 mg/dL). Samples were tested in replicates of ten on the iPhone 6S with the Pixo System with each of three lots of test strips and 10 meters for a total of 300 tests per glucose concentration. Results are summarized below:
| Glucose Level (mg/dL) | Lot | Mean (mg/dL) | SD (mg/dL) | CV (%) |
| --- | --- | --- | --- | --- |
| 40-50 | 1 | 45.38 | 2.93 | 6.46 |
| | 2 | 45.66 | 2.96 | 6.48 |
| | 3 | 45.45 | 3.03 | 6.66 |
| 51-110 | 1 | 81.04 | 3.10 | 3.83 |
| | 2 | 81.12 | 3.33 | 4.1 |
| | 3 | 81.08 | 3.23 | 3.98 |
| 111-150 | 1 | 127.86 | 4.33 | 3.39 |
| | 2 | 127.95 | 4.94 | 3.86 |
| | 3 | 128.67 | 4.43 | 3.44 |
| 151-250 | 1 | 186.4 | 6.53 | 3.50 |
| | 2 | 186.31 | 6.61 | 3.55 |
| | 3 | 186.94 | 6.32 | 3.38 |
| 250-400 | 1 | 332.49 | 7.65 | 2.30 |
| | 2 | 332.86 | 7.41 | 2.22 |
| | 3 | 333.1 | 7.93 | 2.38 |
# Intermediate Precision with iPhone 6S
Intermediate (between run) precision was evaluated using three levels of glucose control solutions, 3 test strip lots, and 10 meters. Each control solution level was measured once a day for 10 days with each meter and test strip lot, for a total of 100 replicates per control solution level per test strip lot for a total of 300 replicate for each glucose control level. Testing was performed on the iPhone 5S with the Pixo System. Results are summarized below:
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| Control Solution Level (mg/dL) | Lot | Mean (mg/dL) | SD (mg/dL) | CV (%) |
| --- | --- | --- | --- | --- |
| 40 – 60 | 1 | 55.75 | 2.92 | 5.23 |
| | 2 | 55.74 | 2.86 | 5.12 |
| | 3 | 55.22 | 2.78 | 5.03 |
| 96 – 144 | 1 | 123.38 | 4.53 | 3.68 |
| | 2 | 123.01 | 4.56 | 3.71 |
| | 3 | 123.96 | 4.36 | 3.52 |
| 280 – 420 | 1 | 397.59 | 11.43 | 2.88 |
| | 2 | 398.42 | 10.98 | 2.76 |
| | 3 | 398.33 | 10.42 | 2.62 |
# b. Linearity/assay reportable range:
The linearity study for the PixoTest BGMS was performed using 3 compatible iPhone 5S and 3 iPhone 6s smartphones and 3 lots of PixoTest Glucose test strip cartridges (3 smartphones tested for each lot). Venous whole blood samples were prepared at 11 levels of glucose concentrations ranging from low to high level (20, 40, 60, 90, 132, 178, 224, 316, 362, 408, 500, 550 mg/dL). Test procedures were performed in 7 replicates per lot per concentration level. The results were compared to a comparator method, the YSI 2300 laboratory analyzer.
iPhone 5S
| Test Trip Lot | Slope | Intercept | R² |
| --- | --- | --- | --- |
| 1 | 0.9973 | -2.5 | 0.999 |
| 2 | 0.9917 | -2.2 | 0.999 |
| 3 | 0.9983 | -3.2 | 0.999 |
iPhone 6S
| Test Trip Lot | Slope | Intercept | R² |
| --- | --- | --- | --- |
| 1 | 0.9831 | -0.27 | 0.999 |
| 2 | 0.9914 | -2.72 | 0.999 |
| 3 | 0.9884 | -3.48 | 0.999 |
The results of the study support the claimed glucose measurement range of 40 to 500 mg/dL. If a sample result is less than $40\mathrm{mg / dL}$ the result is flagged by the meter as "LO" and if a sample result exceeds $500\mathrm{mg / dL}$ the result is flagged by the meter as "HI". The 'HI/LO' error message feature was validated to demonstrate that the feature functions as intended.
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c. Traceability, Stability, Expected values (controls, calibrators, or methods):
Traceability: The iXensor PixoTest Blood Glucose Monitoring System is traceable to the NIST SRM 917b glucose reference material.
## Test Strip Stability:
Test strip stability has been evaluated through accelerated and real-time studies. The real-time studies are on going. The testing protocols and acceptance criteria were reviewed and found to be acceptable to support the claimed shelf life stability of 24 months when stored between 50 and 104 °F and 10 – 90% relative humidity.
d. Detection limit:
See linearity study in Section M1b above.
e. Analytical specificity:
The interference study for PixoTest BGMS was performed using venous blood samples with 3 glucose concentration levels (60, 20, and 250 mg/dL) and 30 potential interfering substances. Ten compatible smartphones (iPhone 5S) and 3 lots of PixoTest Glucose test strip cartridges were used to perform 10 replicates per lot and the results were compared to a comparator method, the YSI 2300 Analyzer. Testing was repeated with the iPhone 6S. The results were consistent across the two devices. The summary of the results are presented in the table below.
| Potential Interferent | Highest concentration tested at which no significant interference is observed |
| --- | --- |
| Acetaminophen | 20 mg/dL |
| Ascorbic acid | 3 mg/dL |
| Bilirubin | 25 mg/dL |
| Cholesterol | 500 mg/dL |
| Creatinine | 10 mg/dL |
| Dopamine | 0.1 mg/dL |
| EDTA | 200 mg/dL |
| Galactose | 15 mg/dL |
| Gentisic acid | 10 mg/dL |
| Glutathione | 92 mg/dL |
| Hemoglobin | 20,000 mg/dL |
| Heparin | 5 IU/ml |
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| Potential Interferent | Highest concentration tested at which no significant interference is observed |
| --- | --- |
| Ibuprofen | 50 mg/dL |
| Icodextrin | 1000 mg/dL |
| L-Dopa | 0.5 mg/dL |
| Maltose | 1000 mg/dL |
| Methyldopa | 1 mg/dL |
| Pralidoxime Iodide | 20000 mg/dL |
| Salicylate | 60 mg/dL |
| Sodium | 414 mg/dL |
| Tolbutamide | 100 mg/dL |
| Tolazamide | 40 mg/dL |
| Triglycerides | 1500 mg/dL |
| Uric acid | 24 mg/dL |
| Xylose | 200 mg/dL |
| Mannitol | 0.09 mg/dL |
| Sorbitol | 0.09 mg/dL |
| Xylitol | 0.09 mg/dL |
| Lacticol | 0.09 mg/dL |
| Isomalt | 0.09 mg/dL |
| Maltitol | 0.09 mg/dL |
The following warning is added to the labeling for interference: If you are taking vitamin C (ascorbic acid; blood concentration $\geq 3\mathrm{mg/dL}$) then the results from your meter may not be correct.
f. Assay cut-off:
Not applicable.
2. Comparison studies:
a. Method comparison with predicate device:
See section M.2.c. below for the user performance study.
b. Matrix comparison:
Not applicable.
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# 3. Clinical studies:
a. Clinical Sensitivity:
Not applicable.
b. Clinical specificity:
Not applicable.
c. Other clinical supportive data (when a. and b. are not applicable):
To assess the accuracy of the Pixo Test Blood Glucose Monitoring System using the iPhone 5S and 6S in the hands of the intended users, in two studies, one for the iPhone 5S and one for the iPhone 6S,105 lay users tested their own fingertip capillary blood samples using the Pixo Test. Results were compared to the measurement made using a laboratory comparator method (YSI 2300 analyzer). Samples ranged in glucose concentrations from 59 to $470\mathrm{mg / dL}$ as measured by the YSI. The meter results relative to YSI are summarized below:
# iPhone 5S
For glucose concentrations $< 75\mathrm{mg / dL}$
| Within ±5mg/dL | Within ±10mg/dL | Within ±15mg/dL |
| --- | --- | --- |
| 7/14 (50%) | 13/14 (92.9%) | 14/14 (100%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| Within ±5% | Within ±10% | Within ±15% | Within ±20% |
| --- | --- | --- | --- |
| 47/91 (51.6%) | 80/91 (87.9%) | 87/91 (95.6%) | 91/91 (100%) |
# iPhone 6S
For glucose concentrations $< 75\mathrm{mg / dL}$
| Within ±5mg/dL | Within ±10mg/dL | Within ±15mg/dL |
| --- | --- | --- |
| 2/4 (50%) | 4/4 (100%) | 4/4 (100.0%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| Within ±5% | Within ±10% | Within ±15% | Within ±20% |
| --- | --- | --- | --- |
| 54/101 (53.5%) | 86/101 (85.1%) | 100/101 (99%) | 101/101 (100%) |
Readability assessment for PixoTest BGMS were performed using the Flesch-Kincaid Grade Level Score to evaluate the readability of PixoTest BGMS User Manual, Quick Start Guide, and test strip insert and demonstrated that the labeling is written at or below and $8^{\text{th}}$ grade reading level.
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4. Clinical cut-off:
Not applicable.
5. Expected values/Reference range:
Expected glucose values for persons without diabetes:
| Status | Range (mg/dL) |
| --- | --- |
| Fasting | <100 mg/dL |
| Two hours after meals | 140 mg/dL |
These ranges were cited from the American Diabetes Association, Classification and Diagnosis of Diabetes, 2017. Diabetes Care 40 (Suppl. 1):S11-S24
N. Instrument Name:
PixoTest Uni-Clip with the PixoHealth App on the iPhone 5S or iPhone 6S
O. System Descriptions:
1. Modes of Operation:
Does the applicant’s device contain the ability to transmit data to a computer, webserver, or mobile device?
Yes ☐ X ☐ or No ☐
Does the applicant’s device transmit data to a computer, webserver, or mobile device using wireless transmission?
Yes ☐ X ☐ or No ☐
2. Software:
FDA has reviewed applicant’s Hazard Analysis and software development processes for this line of product types:
Yes ☐ X ☐ or No ☐
3. Specimen Identification:
Samples are applied directly to the test strip as they are collected.
4. Specimen Sampling and Handling:
This device is intended to be used with capillary whole blood from fingerstick. The whole blood sample is applied directly to the test strip by capillary action.
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5. Calibration:
There is no calibration required by the user for the PixoTest Blood Glucose monitoring system. The meter is automatically coded when the test strip is inserted into the meter.
6. Quality Control:
Two levels of controls are available for use with this meter. The control solutions are sold separately. The control solution range for each control level is printed on the test strip vial label. It is recommended that users check the accuracy of the meter by using the control solutions.
P. Other Supportive Instrument Performance Characteristics Data Not Covered In The "Performance Characteristics" Section above:
1. Electromagnetic compatibility (EMC) (radiated emissions and immunity) testing:
The sponsor provided documentation certifying that acceptable electromagnetic testing (EMC) had been performed and the device system was found compliant.
2. Infection Control and Robustness Studies:
The device is intended for a single-patient use only. Disinfection efficacy studies were performed on the external materials comprising the iPhone 5S, 6S and the Uni-Clip by an outside commercial testing laboratory demonstrating complete inactivation of hepatitis B virus (HBV) with the chosen disinfectant, Clorox Healthcare Bleach Germicidal Wipes by Clorox Professional Products (EPA Registration Number 67619-12). Robustness studies were also performed by the sponsor demonstrating that there was no change in performance or external materials of the Uni-Clip or iPhones 5S and 6S after 7665 cleaning and 7665 disinfection steps. The robustness studies were designed to simulate 7 cleaning and disinfection procedures per day over the device system's three-year use life. Labeling was reviewed for adequate instructions for the validated cleaning and disinfection procedures.
3. Hematocrit:
The hematocrit effect study for PixoTest BGMS was performed using venous blood samples: 5 hematocrit levels (20, 30, 42, 55, and 60%) with 3 glucose concentration levels (30-50, 110-120, and 395-405 mg/dL). Six PixoTest BGMS compatible smartphones (3 iPhone 5S and 3 iPhone 6S) and 3 lots of PixoTest Glucose test strip cartridges were used. Test procedures were performed in 30 replicates per sample (10 per lot). The results were compared against the comparator method, the YSI 2300 Analyzer, and support the claimed hematocrit range of 20-60%.
4. Altitude:
The operated altitude effect study for PixoTest BGMS evaluated performance under environment factors of 4 different altitudes: 3, 3281, 6562, and 9843 feet above sea level (10, 1000, 2000 and 3000 meters) for both the iPhone 5S and iPhone 6S. Venous blood samples with 3 glucose concentration levels (40-50 mg/dL, 96-144 mg/dL and 280-420
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mg/dL) were tested using 5 PixoTest BGMS compatible smartphones and 3 lots of PixoTest Glucose test strip cartridges. Test procedures were performed in 5 replicates per smartphone. The results were compared against reference method YSI 2300 Analyzer. The results demonstrate acceptable bias relative to the reference method to support the claim in the labeling that altitudes up to 9843 feet do not significantly affect device performance.
## 5. Temperature and Humidity operating conditions:
The operating temperature and humidity effect study for PixoTest BGMS evaluated system performance under various environment factors: 10, 25, 35, and 42 °C (50, 77, 95, 107 °F) and 10%, 50%, and 90% relative humidity. Extreme combinations were evaluated in the procedure using venous blood containing three glucose concentration levels (51, 119, 353 mg/dL) measured on the PixoTest BGMS with the iPhone 5S and iPhone 6S, and 3 lots of PixoTest Glucose test strip cartridges. The results were compared the comparator method, the YSI 2300 Analyzer. The data support the use of the device in the claimed temperature and humidity range of 50-104 °F (10-40 °C) and 10-90% relative humidity.
## 6. Sample Volume:
The sample volume study for PixoTest BGMS was performed using 3 lots of test strip cartridges, venous blood samples at 3 glucose concentration levels (60, 100, 220 mg/dL) with 5 sample volumes ranging from 1.25 to 2.5 μL. An error message, "Blood Volume Insufficient" (Error 004) is displayed with less than 2 μL of blood is applied to the test strip. Test procedures were performed in 10 replicates and results were compared to the comparator method, the YSI 2300 Analyzer. The data support the sample volume claim of 1.75 μL.
7. Customer service is available Monday through Friday 9AM-5PM PST by calling 1-800-218-0929. For hours outside of operation, please contact your healthcare professional.
8. This device was cleared after the FDA issued final guidance documents for prescription use blood glucose monitoring systems (BGMS) and over-the-counter use blood glucose monitoring systems (SMBG). However, the recommendations in the guidance documents were not followed for this device since the submission was received prior to the finalization of the guidance documents.
## Q. Proposed Labeling:
The labeling is sufficient and it satisfies the requirements of 21 CFR Part 809.10.
## R. Conclusion:
The submitted information in this premarket notification is complete and supports a substantial equivalence decision.
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Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.