For In Vitro Diagnostic use only. Multichem IA Plus is intended for use as a quality control serum to monitor the precision of laboratory testing procedures for the analytes listed in the package insert.
Device Story
Multichem IA Plus is a liquid, frozen quality control serum used in clinical laboratories to monitor the precision of diagnostic testing procedures. It is prepared from human serum supplemented with purified biochemical materials (human/animal origin), chemicals, drugs, stabilizers, and preservatives. The device is provided in three levels to allow performance monitoring across the clinical range. Laboratory technicians use the control by running it alongside patient samples; the resulting values are compared against expected ranges to verify the accuracy and precision of the testing system. This objective assessment helps ensure the reliability of clinical diagnostic results, ultimately supporting accurate patient diagnosis and treatment monitoring. Each donor unit is screened for HIV, HCV, and HBsAg.
Clinical Evidence
No clinical data. Bench testing only. Stability testing (shelf-life and open-vial) performed per CLSI EP25-A. Value assignment conducted using 15 replicates per analyte across multiple runs to establish target means and 3SD ranges.
Technological Characteristics
Quality control material composed of processed human serum with added biochemicals, drugs, stabilizers, and preservatives. Provided in liquid, frozen form. Shelf life: 36 months at -20°C to -80°C. Open-vial stability varies by analyte (1 hour to 10 days at 2-8°C). No electronic components, software, or energy sources.
Indications for Use
Indicated for use as a quality control serum to monitor the precision of laboratory testing procedures for specific analytes in clinical settings. Prescription use only.
Regulatory Classification
Identification
A quality control material (assayed and unassayed) for clinical chemistry is a device intended for medical purposes for use in a test system to estimate test precision and to detect systematic analytical deviations that may arise from reagent or analytical instrument variation. A quality control material (assayed and unassayed) may be used for proficiency testing in interlaboratory surveys. This generic type of device includes controls (assayed and unassayed) for blood gases, electrolytes, enzymes, multianalytes (all kinds), single (specified) analytes, or urinalysis controls.
Predicate Devices
Multichem IA Plus (k132091)
Submission Summary (Full Text)
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510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION
DECISION SUMMARY
ASSAY ONLY TEMPLATE
A. 510(k) Number:
k162530
B. Purpose for Submission:
Addition of the following 13 assayed analytes to a previously cleared quality control material (k132091): Acetaminophen, ACTH, Amikacin, Calcitonin, Human Growth Hormone, Lithium, Salicylate, Thyroglobulin, Tobramycin, Free Estriol, EPO, NT Pro-BNP and Troponin T.
C. Measurand:
Quality control materials for Acetaminophen, ACTH, Amikacin, Calcitonin, Human Growth Hormone, Lithium, Salicylate, Thyroglobulin, Tobramycin, Estriol Free, EPO, NT Pro BNP, Troponin T, Alpha Fetoprotein (AFP), Anti-thyroglobulin, Anti-thyroperoxidase, Human Chorionic Gonadotropin (BhCG), BNP (1-32), CA 125, CA 15-3, CA 19-9, Carbamazepine, Carcinogenic Embryonic Antigen (CEA), CK-MB, Cortisol, C-Peptide, DHEA-Sulfate, Digoxin, Estradiol, Ferritin, Folate, Prostate Specific Antigen Free, Follicle Stimulating Hormone (FSH), Triiodothyronine Free (FT3), Thyroxine Free (FT4), Gentamicin, Homocysteine, Immunoglobulin E, Insulin, Luteinizing Hormone, Myoglobin, Parathyroid Hormone (PTH) (1-84), Phenobarbital, Phenytoin, Progesterone, Prolactin, Prostate Specific Antigen Total, Sex Hormone Binding Globulin, T-Uptake, Testosterone, Theophylline, Troponin I, Thyroid Stimulating Hormone (TSH), Triiodothyronine Total (TT3), Thyroxine Total (TT4), Valproic Acid, Vancomycin, Vitamin B12, 25-OH Vitamin D.
D. Type of Test:
Not applicable.
E. Applicant:
Techno-Path Manufacturing Ltd.
F. Proprietary and Established Names:
Multichem IA Plus
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G. Regulatory Information:
1. Regulation section:
21 CFR 862.1660
2. Classification:
Class I, reserved
3. Product code:
JJY
4. Panel:
Clinical chemistry (75)
H. Intended Use:
1. Intended use(s):
See “Indication(s) for use” below
2. Indication(s) for use:
For In Vitro Diagnostic use only. Multichem IA Plus is intended for use as a quality control serum to monitor the precision of laboratory testing procedures for the analytes listed in the package insert.
3. Special conditions for use statement(s):
For prescription use only
4. Special instrument requirements:
The package insert lists the following instruments for which the quality control material is intended: Abbott Architect platforms, Beckman Access II platforms, Roche Cobas platforms and Beckman DXI platforms.
I. Device Description:
The Multichem IA Plus controls are prepared from human serum with added constituents of human and animal origin, chemicals, therapeutic drugs, stabilizers and preservatives. The control is available in liquid form.
Three levels of control are available to allow performance monitoring within the clinical range.
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Each donor unit used in the preparation of the control material was tested by United States Food and Drug Administration (FDA) approved methods and found to be negative for antibodies to HIV and HCV, and non-reactive for HBsAg.
The following kit configurations are available:
Multichem IA Plus
Model IA310A (Trilevel) with Level 1, 2 & 3 control; 12 vials with 5 mL contents
Model 05P56-10 (Trilevel) with Level 1, 2 & 3 control; 12 vials with 5 mL contents
Model IA311A with Level 1 control; 12 vials with 5 mL contents
Model IA312A with Level 2 control; 12 vials with 5 mL contents
Model IA313A with Level 3 control; 12 vials with 5 mL contents
## J. Substantial Equivalence Information:
1. Predicate device name(s):
Multichem IA Plus
2. Predicate 510(k) number(s):
k132091
3. Comparison with predicate:
| Similarities | | |
| --- | --- | --- |
| Characteristics | Multichem IA Plus Assayed Control (k162530, Candidate Device) | Multichem IA Plus Assayed Control (k132091, Predicate Device) |
| Intended Use | Multichem IA Plus is intended for use as a quality control serum to monitor the precision of laboratory testing procedures for the analytes listed in the package insert. | Same |
| Form | Liquid, Frozen | Same |
| Matrix | Processed Human Serum | Same |
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| Differences | | |
| --- | --- | --- |
| Characteristics | Multichem IA Plus Assayed Control
(k162530, Candidate Device) | Multichem IA Plus Assayed Control
(k132091, Predicate Device) |
| Assayed Analytes | Same plus 13 analytes:
Acetaminophen, ACTH, Amikacin, Calcitonin, Human Growth Hormone, Lithium, Salicylate, Thyroglobulin, Tobramycin, Free Estriol, EPO, NT Pro-BNP and Troponin T | Alpha Fetoprotein (AFP), Anti-thyroglobulin, Anti-thyroperoxidase, Human Chorionic Gonadotropin (hCG), BNP (1-32), CA 125, CA 15-3, CA 19-9, Carbamazepine, Carcinogenic Embryonic Antigen (CEA), CK-MB, Cortisol, C-Peptide, DHEA-Sulfate, Digoxin, Estradiol, Ferritin, Folate, Prostate Specific Antigen Free, Follicle Stimulating Hormone (FSH), Triiodothyronine Free (FT3), Thyroxine Free (FT4), Gentamicin, Homocysteine, Immunoglobulin E, Insulin, Luteinizing Hormone, Myoglobin, Parathyroid Hormone (PTH) (1-84), Phenobarbital, Phenytoin, Progesterone, Prolactin, Prostate Specific Antigen Total, Sex Hormone Binding Globulin, T-Uptake, Testosterone, Theophylline, Troponin I, Thyroid Stimulating Hormone (TSH), Triiodothyronine Total (TT3), Thyroxine Total (TT4), Valproic Acid, Vancomycin, Vitamin B12, 25-OH Vitamin D. |
| Storage Shelf Life (Unopened) | 36 Months @ -20°C to -80°C | 30 Months @ -20°C to -80°C |
| Storage Open Vial | 10 days at 2 to 8°C, with the following exceptions:
BNP = 1 hour, C-Peptide = 7 days, Folate = 2 days, Homocysteine = 7 days, PTH Intact = 4 days, Troponin I = 4 days, 25OH Vitamin D = 4 days, ACTH = 8 hours, Calcitonin and Troponin T = 7 days at 2 to 8°C. | 10 days at 2 to 8°C, with the following exceptions:
BNP = 1 hour, C-Peptide = 7 days, Folate = 2 days, Homocysteine = 7 days, PTH Intact = 4 days, Troponin I = 4 days, and 25OH Vitamin D = 4 days at 2 to 8°C. |
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K. Standard/Guidance Document Referenced (if applicable):
CLSI EP25-A, Evaluation of Stability of In Vitro Diagnostic Reagents, 2009.
L. Test Principle:
Not applicable.
M. Performance Characteristics (if/when applicable):
1. Analytical performance:
a. Precision/Reproducibility:
Not applicable.
b. Linearity/assay reportable range:
Not applicable.
c. Traceability, Stability, Expected values (controls, calibrators, or methods):
Traceability -
The base matrix of the three control levels is processed human serum. The traceability / source of materials used to prepare the three control levels for the 13 new assayed analytes are as listed in the table below:
| Assigned Analytes | Source of Material |
| --- | --- |
| Acetaminophen | Chemical - Therapeutic Drug |
| ACTH | Endogenous and spiked with purified human ACTH |
| Amikacin | Chemical - Therapeutic Drug |
| Calcitonin | Endogenous and spiked with purified human Calcitonin |
| EPO | Endogenous and spiked with purified human EPO |
| hGH | Endogenous and spiked with purified human or recombinant Growth Hormone |
| Free Estriol | Endogenous and spiked with chemical |
| Lithium | Chemical - Therapeutic Drug |
| NT Pro-BNP | Endogenous and spiked with purified recombinant NT Pro-BNP |
| Salicylate | Chemical - Therapeutic Drug |
| Thyroglobulin | Endogenous and spiked with purified human Thyroglobulin |
| Tobramycin | Chemical - Therapeutic Drug |
| Troponin T | Endogenous and spiked with purified human Troponin T |
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6
# Stability -
Shelf-Life (closed vial) and in-use (open vial) stability testing protocols and acceptance criteria were described and found to be adequate.
Real-time stability testing supports a shelf-life stability claim of 36 months when stored frozen at -20 °C to -80°C for the Multichem IA Plus three level controls.
Real-Time stability testing supports open vial stability claims as listed below:
- Acetaminophen, Amikacin, EPO, hGH, Free Estriol, Lithium, NT Pro-BNP, Salicylate, Thyroglobulin and Tobramycin of 10 days at 2 to 8°C
- ACTH of 8 hours at 2 to 8°C
- Calcitonin and Troponin T of 7 days at 2 to 8°C
# Value Assignment -
The value assignment for all analytes was performed on analyte specific assay/analyzer systems using the proposed new value assignment protocol. Fifteen replicates of each analyte were tested over a minimum of three runs with a minimum of three replicates per run using and run over multiple days. The mean from the 15 data points was used as the target concentration. The assignment of value assignment ranges was established based on the 3SD value for each level of the analyte control. The target mean and range for each analyte level along with their respective acceptance criteria were provided for review and found acceptable. Representative values for target mean and range for each analyte for a lot are provided in tabular form in the value assignment sheets.
d. Detection limit:
Not applicable.
e. Analytical specificity:
Not applicable.
f. Assay cut-off:
Not applicable.
2. Comparison studies:
a. Method comparison with predicate device:
Not applicable.
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b. Matrix comparison:
Not applicable.
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):
Not applicable.
4. Clinical cut-off:
Not applicable.
5. Expected values/Reference range:
Expected values are provided in the value assignment sheets provided with the package insert.
N. Proposed Labeling:
The labeling is sufficient and it satisfies the requirements of 21 CFR Part 809.10.
O. Conclusion:
The submitted information in this premarket notification is complete and supports a substantial equivalence decision.
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Learn the FDA Browser
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.