CODA is an integrated immunoassay analyzer intended for the automation of microplate based assays for in vitro diagnostic use. The system is open, such that a variety of microplate-based enzyme immunoassays (EIA's) can be programmed and run on the instrument. The sample and reagent pipettes, incubator, washer, reader and robotics are housed in the compact benchtop unit. CODA Operation and Data Management software operates in the Windows 95 environment utilizing icon-based commands for operator ease of use.
Device Story
Coda is a compact, benchtop, integrated immunoassay analyzer for microplate-based (8 wells by 12 strips) chemistries. It automates sample/reagent pipetting, plate-shaking, incubation, washing, and spectrophotometric reading. An external computer running Windows 95-based software manages operations and data. The system is 'open,' allowing users to program various EIA protocols. The device processes samples by adding them to pre-coated microtitre wells, performing incubation and wash steps, adding enzyme conjugate and substrate, and measuring absorbance at defined wavelengths. The software performs automated calculations, curve-fitting, and result interpretation by comparing unknown absorbance values to calibrators. Used in clinical laboratory settings by trained personnel to improve efficiency and consistency in immunoassay testing; benefits include standardized, automated processing of multiple assays on a single platform.
Clinical Evidence
Bench testing only. Precision evaluated per NCCLS EP5-T2; within-run %CV ranged 7.1-9.5%, total precision 7.7-14.0%. Sensitivity (measuring range) for TSH was 0.034 ulU/mL at 95% confidence. Accuracy evaluated via correlation study with the Radius system (NCCLS EP9-T) using 111 samples, yielding a correlation coefficient (r) of 0.995.
Technological Characteristics
Compact benchtop unit housing robotics, pipettes, incubator, washer, and spectrophotometer. Operates on Windows 95 platform. Open system architecture allows user-programmable microplate-based EIA protocols. Connectivity via external computer. Software performs automated data management, curve-fitting, and result interpretation.
Indications for Use
Indicated for in vitro diagnostic use in clinical laboratories to automate microplate-based enzyme immunoassays (EIA).
Regulatory Classification
Identification
An enzyme analyzer for clinical use is a device intended to measure enzymes in plasma or serum by nonkinetic or kinetic measurement of enzyme-catalyzed reactions. This device is used in conjunction with certain materials to measure a variety of enzymes as an aid in the diagnosis and treatment of certain enzyme-related disorders.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with three stripes forming its body and wings. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" are arranged in a circle around the eagle.
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
John W. Nelson JUL 30 1997 .• Manager, Regulatory Affairs • Bio-Rad Laboratories 4000 Alfred Nobel Drive Hercules, California 94547-1803
K972024 Re : Coda™ Automated EIA Analyzer Requlatory Class: I Product Code: JJI May 30, 1997 Dated: Received: June 2, 1997
Dear Mr. Nelson:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). You may, therefore, market the device, subject to the general controls provisions The general controls provisions of the Act 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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Requlations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP requlation may result in regulatory In addition, FDA may publish further announcements action. concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal Laws or Requlations.
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Under the Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), this device may require a CLIA complexity categorization. To determine if it does, you should contact the Centers for Disease Control and Prevention (CDC) at (770) 488-7655.
This letter will allow you to begin marketing your device as described in your 510 (k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling requlation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4588. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
Steven Gutman
Steven I. Gutman, M.D., M.B.A. Director Division of Clinical Laboratory Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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K yiday
JUL 300 1997
## APPENDIX B
## SUMMARY OF SAFETY AND EFFECTIVENESS
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Image /page/3/Picture/0 description: The image shows the logo for Bio-Rad. The text "BIO-RAD" is written in white, bold, sans-serif font. The plus sign in the middle of the text is slightly larger than the other letters. The text is set against a black, rounded rectangle.
Bio-Rad Laboratories
Diagnostics Group 4000 Alfred Nobel Dr. Hercules, CA 94547-1803 Telephone: 510 724-7000 Fax: 510 741-5824
## SUMMARY OF SAFETY AND EFFECTIVENESS
| Submitter: | Bio-Rad Laboratories, Inc.<br>Clinical Systems Division<br>4000 Alfred Nobel Drive<br>Hercules, California 94547<br>Phone 1-510-741-6015<br>FAX 1-510-741-5824 |
|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | John W. Nelson<br>Manager, Regulatory Affairs |
| Date Prepared: | May 30, 1997 |
| Product Trade Name: | Bio-Rad Coda™ Automated EIA Analyzer |
| Common Name: | Coda |
| Classification Name: | Enzyme Analyzer, for Clinical Use, 75JJI |
| Predicate Devices | 1. Radius™ Immunoassay System,<br>Bio-Rad Laboratories, K930898. |
| | 2. ACS 180 Automated Chemiluminescence<br>System, Ciba Corning, K902336. |
| | 3. Abbott IMX2 Analyzer, Abbott<br>Laboratories, K931970. |
To establish substantial equivalence to an existing device, and thus establish the safety and effectiveness of the Bio-Rad Coda Automated EIA Analyzer, the Bio-Rad Coda Automated EIA Analyzer has been compared to the Bio-Rad Radias Immunoassay System K930898. A review of the intended use of each system shows them to be essentially the same in that they are capable of measuring a number of analytes based on the Enzyme Immunoassay (EIA) principle. The intended use of the Bio-Rad Coda Automated EIA Analyzer is stated as: CODA is an integrated immunoassay analyzer intended for the automation of microplate based assays for in vitro diagnostic use. The system is open, such that a variety of microplate-based enzyme immunoassays (EIA's) can be programmed and run on the instrument. The sample and reagent pipettes, incubator, washer, reader and robotics are housed in the compact benchtop unit. CODA Operation and Data Management software operates in the Windows 95 environment utilizing icon-based commands for operator ease of use. The intended use of the Bio-Rad Radias Immunoassay System is stated as: Radias is a fully automated immunoassay system utilizing ELISA based assays for in vitro diagnostic use.
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The Bio-Rad Coda Automated EIA Analyzer (Coda) is a compact, integrated immunoassay system designed for the automation of microplate based (8 wells by 12 strips) chemistries. The sampler, plate-shaker, incubator, washer, reader and robotics are housed in a single compact Main Unit. An external computer handles the operation and data management using software contained on a CD-ROM which operates in the Windows 95 environment.
Enzyme immunoassay (EIA) typically involves the addition of a defined volume of sample to a series of plastic microtitre wells which have been pre-coated with antigen or antibody. The wells are sometimes washed to remove unbound ligand before addition of enzyme conjugate to each well. After incubation, substrate is added followed by a second incubation. The enzyme reaction is "stopped" and the colored reactant product is measured by absorbance at a defined wavelength. The absorbance values of the unknowns are compared to absorbance of calibrators to determine the concentration of the ligand in the sample. The Coda provides an integrated, automated approach to carrying out the above steps all under control of the computer and associated software. All the steps may be programmed into a complete protocol or individual steps may be performed in a manual mode. The Coda is therefore virtually usable with any assay kit using microtite plates. Output from the spectrophotometer is measured by the computer. Calculation, curve-fitting, result interpretation and other aspects of data management and analysis are automatically performed by the software algorithms.
Bio-Rad Radias Immunoassay System (Radias) is a fully automated immunoassay system designed for high-capacity which, like the Coda, is based on ElA. All assay operations, including pipetting, diluting and incubating samples and reagents are performed by the Radius. Based on a "worklist" the Radius determines the quantities and types of reagents and microwell "strips" that will be needed for the run. The Radias can do multiple assays on the same sample. All reagents required by the Radius are supplied by Bio-Rad Laboratories in Radias compatible "troughs". Calculation, curve-fitting, result interpretation and other aspects of data management and analysis are automatically performed by the software algorithms.
The performance of the Bio-Rad Coda Automated EIA Analyzer was evaluated for precision, sensitivity, carry over, and accuracy. The precision studies were done according to NCCLS Evaluation protocol, Vol. 12, No 4, EP5-T2, Appendix C, pp 31-39. Twenty samples each of low, mid-range and high control plus a Bio-Rad anemia control (AN) were analyzed. The Within-Run % CV for the low control was 8.6 and for the mid-range control 7.1. The high control was consistently creater that 25 ulU/mL. The %CV for the anemia control was 9.5. Total precision for the low control was 9.6% and for the mid-range control 7.7% . Again the high control was consistently greater than 25 ulU/mL. The total precision for the anemia control was 14.0%. The measuring range (sensitivity) determined that the lowest level of TSH that could be distinguished from the zero standard is 0.034 ulU/mL at the 95% confidence limit on the Coda.
The correlation study, to determine accuracy, of Bio-Rad Coda Automated EIA Analyzer compared to the Bio-Rad Radias Immunoassay System followed NCCLS Document EP9-T. For 111 samples, the correlation coefficient, "r", was 0.995.
When comparing the Bio-Rad Coda Automated EIA Analyzer to the predicate, it can be concluded from the correlation study and similarities of the general characteristics of the two systems (Appendix C), that the Bio-Rad Coda Automated EIA Analyzer and the Bio-Rad Radias Immunoassay System are substantially equivalent. Based on the establishment of substantial equivalence, the safety and effectiveness of the Bio-Rad Coda Automated ElA Analyzer is confirmed.
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## Statement of Intended Use
Page 1 of 1
510(k) Number (If Known)
Bio-Rad Coda™ Automated EIA Analyzer. Device Name:
CODA is an integrated immunoassay analyzer intended for the ndications for Use: automation of microplate based assays for in vitro diagnostic use. The system is open, such that a variety of microplate-based enzyme immunoassays (EIA's) can be programmed and run on the instrument. The sample and reagent pipettes, incubator, washer, reader and robotics are housed in the compact benchtop unit. CODA Operation and Data Management software operates in the Windows 95 environment utilizing icon-based commands for operator ease of use.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDHR, Office of Device Evaluation (ODE)
Prescription Use
(Per 21 CFR 801.109)
OR Over-The-Counter Use _
(Division Sign-Off)
Division of Clinical Laboratory Dexices
510(k) Number K972024
Laboratory Dexices
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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.
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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.