The CELL-DYN 4000 System with ImmunoPlt (CD61) Assay is a multi-parameter, automated hematology analyzer designed for in-vitro diagnostic use in clinical laboratories. The CELL-DYN 4000 System with ImmunoPlt (CD61) Assay is a fully automated hematology analyzer, including reporting of the ImmunoPlt (CD61) count, intended for in-vitro diagnostic use in the clinical laboratory of a hospital, medical clinic, or reference laboratory.
Device Story
Automated hematology analyzer for clinical laboratories; processes EDTA-anticoagulated whole blood. System modules: Analyzer (aspiration/dilution/analysis), Autoloader (specimen handling), Pneumatic Unit (fluid/tube movement), Data Station (processing/interface), Color Printer. Principle of operation: flow cytometry combining laser optical scatter, fluorescence, and focused flow impedance. For ImmunoPlt (CD61) assay: sample labeled with CD61 monoclonal antibody; measured via laser optical scatter and green fluorescence (FL1). System performs multi-parameter blood analysis including WBC, RBC, hemoglobin, reticulocyte, and platelet counts. Data station controls processing; provides operator interface. Output used by clinicians for hematological assessment; aids in diagnosis and monitoring of blood-related conditions.
Clinical Evidence
Bench testing only. Data provided includes accuracy, precision, linearity, and carryover studies demonstrating performance to manufacturer specifications. No clinical trial data reported.
Technological Characteristics
Multi-parameter automated hematology analyzer. Sensing: Argon-ion laser optical scatter (0°, 7°, 90°, 90°D), fluorescence (FL1), and focused flow impedance. Reagents: Cyanide-free hemoglobin reagent, fluorescent dyes for WBC/RBC/reticulocyte/platelet analysis. Connectivity: Data station interface, color printer output. Software: Automated system control and data processing.
Indications for Use
Indicated for in-vitro diagnostic use in clinical laboratories for automated hematology analysis, including CD61-labeled platelet counting, in EDTA-anticoagulated whole blood specimens.
Regulatory Classification
Identification
An automated differential cell counter is a device used to identify one or more of the formed elements of the blood. The device may also have the capability to flag, count, or classify immature or abnormal hematopoietic cells of the blood, bone marrow, or other body fluids. These devices may combine an electronic particle counting method, optical method, or a flow cytometric method utilizing monoclonal CD (cluster designation) markers. The device includes accessory CD markers.
Special Controls
*Classification.* Class II (special controls). The special control for this device is the FDA document entitled “Class II Special Controls Guidance Document: Premarket Notifications for Automated Differential Cell Counters for Immature or Abnormal Blood Cells; Final Guidance for Industry and FDA.”
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# JUN 2 9 1998
: *
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KA8134a
510(k) Notification
CELL-DYN® 4000 ImmunoPl("" (CD61)
## 510(k) SUMMARY
# CELL-DYN®4000 Multi-Parameter Automated Hematology Analyzer with Immunological (CD61) Platelet Count
# 510(k) Summary Of Safety And Effectiveness Information Supporting A Substantially Equivalent Determination
The following information, as presented in the Premarket Notification 510(k) for the CELL-DYN® 4000 System Hematology Analyzer with ImmunoPlt™ (CD61) Assay, constitutes data supporting a substantially equivalent determination.
The methods of determination are those used by the CELL-DYN@4000 System and the manual phase platelet method. These methods collectively perform one or more of the determinations which are combined in the CELL-DYN® 4000 System with ImmunoPlt (CD61) Assay.
#### Intended Use
The CELL-DYN 4000 System with ImmunoPlt (CD61) Assay is a multi-parameter, automated. hematology analyzer designed for in-vitro diagnostic use in clinical laboratories.
## Device Description
The CELL-DYN® 4000 System has five main modules: the Analyzer, which aspirates, difutes and analyzes each whole blood specimen; the Autoloader, which automatically identifies, mixes, and presents specimens for processing; the Pneumatic Unit, which controls fluid movement in the Analyzer and tube movement in the Autoloader; the Data Station, which controls all system processing and provides the primary operator interface with the system; and the Color Printer, which generates reports automatically or on demand.
The CELL-DYN 4000 System with ImmunoPlt (CD61) Assay is designed to analyze EDTAanticoagulated whole blood specimens and report the hematological parameters shown in the table on the following page.
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CELL-DYN® 4000 ImmunoPlt™ (CD61)
··············································································································································································
| CELL-DYN®4000 System with ImmunoPlt™ (CD61) Assay: | |
|--------------------------------------------------------------|----------------------------------------------------------|
| White Blood Cell Parameters: | Red Blood Cell Parameters: |
| WBC -- White Blood Cell or leukocyte count | RBC -- Red Blood Cell or erythrocyte count |
| NEU -- Neutrophil absolute count | *RBCO -- RBC Optical count |
| %N -- Neutrophil percent | RBCi -- RBC Impedance count |
| LYM -- Lymphocyte absolute count | HCT -- Hematocrit |
| %L -- Lymphocyte percent | MCV -- Mean Corpuscular Volume |
| MONO -- Monocyte absolute count | RDW -- Red Cell Distribution Width |
| %M -- Monocyte percent | NRBC -- Nucleated Red Blood Cell absolute<br>count |
| EOS -- Eosinophil absolute count | NR/W -- Nucleated Red Blood Cell percent of<br>WBC count |
| %E -- Eosinophil percent | Hemoglobin Parameters: |
| BASO -- Basophil absolute count | HGB -- Hemoglobin concentration |
| %B -- Basophil percent | MCH -- Mean Corpuscular Hemoglobin |
| *vWF -- Viable White Cell fraction | MCHC -- Mean Corpuscular Hemoglobin<br>Concentration |
| *BAND -- Band Neutrophil absolute count | Reticulocyte Parameters: |
| *%BD -- Band Neutrophil percent | RETC -- Reticulocyte concentration |
| *IG -- Immature Granulocyte absolute count | %R -- Reticulocyte percent of RBC count |
| *%IG -- Immature Granulocyte percent | IRF -- Immature Reticulocyte Fraction |
| *BLST -- Blast absolute count | Platelet Parameters: |
| *%BL -- Blast percent | PLT -- Platelet Count |
| *MONe -- non-Blast Monocyte absolute count | CD61 -- ImmunoPlt (CD61) Count |
| *%Me -- non-Blast Monocyte percent | PLTo -- Platelet Optical count |
| *LYMe -- non-Blast, non-variant Lymphocyte<br>absolute count | *PLTi -- Platelet Impedance count |
| *Le -- non-Blast, non-variant Lymphocyte<br>percent | MPV -- Mean Platelet Volume |
| *VARL -- Variant Lymphocyte absolute count | *PLTs -- Small Platelets |
| *%VL -- Variant Lymphocyte percent | *PLTl -- Large Platelets |
| | *PDW -- Platelet Distribution Width |
| | *PCT -- Plateletcrit |
CELL-DYN®4000 System with ImmunoPlt™ (CD61) Assay.
These parameters are provided for laboratory use only and are not reportable in the US. *
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## Principles of Operation
The analyzer counts, sizes and classifies blood cells by the combination of flow cytometry The analyzer Counts, Sizes and Fluorescence, with Focused Flow Impedance, and methous: Laser Optical Scatter and I harrosonol, ( . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Absorphon Specifolionista J. The Platelets. The CELL-DYN® 4000 System uses an Argonand fidorescence of the mires The Optical Bench detects light in the form of scatter from for last as the optical light source: "The Option is a more ally stained blood cells.
blood cell surfaces and internal structures, or fluorescent light from specially stained blood cen surfaces and MRBCs, whole blood is diluted with a reagent containing a red I on the WDC parameters simultaneously collected for four angles (0°, 7°, 90°, and 90°D) of Indorescent dye. Data are simultanes as ) cell passes through the laser beam. NRBCs, identified scatter and roce neee excluded automatically from the WBC count.
For the RBC and the PLT parameters, whole blood is diluted with a reagent that prepares the cells for measurement. The dilution is split and measured by both laser optical scatter (7° and Cons for modeller. For the Injection Metering. For the ImmunoPlt (CD61) count, 90 ) and Pocused I 10w mipocares onund Monoclonal Antibody, CD61. Laser optical scatter is measured as described above and green fluorescence (FL1) is measured.
For the hemoglobin parameters, whole blood is diluted with a cyanide free reagent and the For the nemoglobin parameters, whole exorbance (540 mm). For the reticuloved and many the nemogroom is measures open is diluted with a reagent containing a green fluorescent dye. and of the RDCA D = and green fluorescence (FL1) as each cell passes through the laser beam.
## Similarities and Differences
The CELL-DYN® 4000 System and the CELL-DYN® 4000 System with ImmunPlt™ (CD61) The CDD are similar in that they use Focused Flow Impedance to count and size RBCs and PLTs, Assay are similar in that they as a reasure RBCs and PLTs optically, and they compare optical and impedance data as an internal quality check. The CELL-DYN® 4000 System with GD61 mipodation as a a a a a fassy is different from the CELL-DYN® 4000 System in that it counts CD61 labeled platelets and measures the results optically and by fluorescence.
## Equivalency Data
The data compiled supports the claim that the CELL-DYN® 4000 System with ImmunoPlt (CD61) Assay is substantially equivalent to the Abbott the CELL-DYN® 4000 System and to (base microscopy (for platelet counts < 50 K/μL). The data includes accuracy, precision, linearity, and carryover and shows performance to manufacturer's specifications.
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# Conclusion
The CELL-DYN® 4000 System with ImmunoPlt™ (CD61) Assay shows an evolution of the technologies used on one or more of the currently available analyzers to count, size, and classify toonloregios and their related parameters, and more specifically, to the technologies used on the Abbott CELL-DYN® 4000 System.
The 510(k) Summary was prepared and submitted by:
Janice E. Brown Regulatory Affairs Manager Abbott Diagnostics 5440 Patrick Henry Drive Santa Clara, CA 95054
> Phone: 408 567-3521 408 982-4863 Fax:
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Image /page/4/Picture/1 description: The image is a black and white logo for the U.S. Department of Health & Human Services. The logo features a stylized caduceus symbol, which is a staff with two snakes coiled around it. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" are arranged in a circular pattern around the caduceus symbol. The logo is simple and clean, and it is easily recognizable.
10903 New Hampshire Avenue Silver Spring, MD 20993
JUN 20 2012
Abbott Laboratories c/o Ms. Janice E. Brown Regulatory Affairs Manager 5440 Patrick Henry Drive Santa Clara, CA 95054
Re: k981342
Trade/Device Name: CELL-DYN® 4000 ImmunoPlt (CD61) Assay Regulation Number: 21 CFR §864.5220 Regulation Name: Automated Differential Cell Counter Regulatory Class: Class II Product Code: GKZ Dated: April 10, 1998 Received: April 13, 1998
Dear Ms. Brown:
This letter corrects our substantially equivalent letter of June 29, 1998.
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical
{5}------------------------------------------------
device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to
http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Reena Philip
for
Maria M. Chan, Ph.D. Director Division Immunology and Hematology Devices Office of In Vitro Diagnostic Device Evaluation and Safety
Center for Devices and Radiological Health
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# Clil.l.-DYN® 4000 Immunol'lt™ (CD61)
Page 1 of 1
K981342
510(k) Number (if known): #K060408
Device Name: CELL-DYN® 4000 System with ImmunoPlt™ (CD61) Assay
1
Indications For Use:
Indications For Got.
The CELL-DYN® 4000 System with ImmunoPlt (CD61) Assay is a filly automated hemstology
of the CELL-D Your with a of the ImmunoPlt (CD61) count, intended f The CELL-DYN® 4000 System with ImmunoPlt (CD61) Assay is a time adomation of the CBS
analyzer, including reporting of the ImmunePlt (CD61) count, intended for in-virro diagno analyzer, including reporting of the ImmunoFit (CDVF) South, a
the clinical laboratory of a hospital, medical clinic, or reference laboratory.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off)
:sion of Clinical Laboratory Devices
510(k) Number K981342
OR
Prescription Use (Per 21 CFR 801. 109) Over-The-Counter Use
(Optional Format 1-2-96)
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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.
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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).
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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.
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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.
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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.
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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.
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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.