Cruxi
FDA record research
The 2021–2025 analysis contains 1 selected substantially-equivalent FDA decisions under primary product code OIF. Use it to compare documented submissions and evidence with your product. A separate 2026 update contains 0 decisions through 2026-09-27. The latest selected decision across the acquired endpoint is dated 2023-08-24. Neither set establishes a suitable predicate or the route for your device. The complete-year window has 1 decisions; the separate all-observed-date count is 3. These denominators describe different date ranges.
Evidence retrieved 2026-10-06. Source versions and topic-specific limits are listed below.
An exact FDA-record regulation_number match to one acquired Title 21 section. Records with the same normalized scope definition, class, regulation and recorded submission/GMP flags are grouped. Sparse definitions and generic exemption boilerplate do not qualify. No text-similarity equivalence or legal applicability is inferred.
The device is used for the semi-quantitative determination of autoantibodies against tyrosine phosphatase (IA-2) in human serum as an aid in the diagnosis of Type 1 diabetes mellitus (autoimmune mediated diabetes).
Compare the proposed indication, user, anatomy, technology and operating principle with this actual scope; record differences and unresolved facts.
§ 866.5660 Multiple autoantibodies immunological test system. (a) Identification. A multiple autoantibodies immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the autoantibodies (antibodies produced against the body's own tissues) in serum and other body fluids. Measurement of multiple autoantibodies aids in the diagnosis of autoimmune disorders (disease produced when the body's own tissues are injured by autoantibodies). (b) Classification. Class II (performance standards).
Read the identification, classification, conditions and referenced limitations in the cited section. A numeric reference match is not a buyer classification or exemption determination.
Historical FDA comparison
All statistics in this section use decisions dated 2021-01-01 to 2025-12-31. The partial 2026 update below is excluded from these distributions.
There are 1 valid recent date pairs. Distribution summaries require at least 20; older records are not substituted for a current benchmark.
Statistical source: FDA openFDA 510(k) decision dataset. Partition 1 Download the identified records and dates (CSV).
Deduplicate by official submission ID across the complete current manifest partitions. Select exact primary product code, K-number format and the stated SE decision codes with valid dates. Recent distributions use the five complete calendar years preceding the latest valid endpoint decision year. Partial-year counts compare equal January-to-cutoff periods. Quartiles use linear interpolation at (n-1)*p and are withheld below 20 valid date pairs. The analysis n describes only its declared complete-year window; selected_se_n separately counts all selected recorded dates through the cutoff.
3 selected records across all observed dates; 0 other/invalid identifier or decision-date records excluded. 0 missing or invalid date pairs in the five-year window.
Date fields: date_received → decision_date. Quantiles: Hyndman–Fan type 7: linear interpolation at (n − 1) × p; displayed to one decimal; n ≥ 20 valid pairs.
Receipt-to-decision calendar elapsed time includes time outside active FDA review; it is not FDA review time, a promised project timeline or an estimate of future clearance. This selected recorded cohort does not include all applications or establish a success probability, predicate suitability, market size, current market availability or legal authorization for another product.
Calculation fda-buyer-research-3 · database cutoff 2026-09-27. CSV rows identify each official K-number, cohort, date pair, exclusion reason and source version.
Separate partial-year update
0 selected decisions from 2026-01-01 to 2026-09-27. The equivalent previous-year period contains 0 decisions through 2025-09-27. These counts describe the records; they are not market growth or submission success rates.
Named records to investigate
These dated records may come from 2026 or earlier years. They are a separate investigation list, not the five-year statistical cohort. Compare the actual indications and technology before considering a record as a comparator.
| Official record / device | Recorded applicant | Decision | Recorded type | Calendar days |
|---|---|---|---|---|
| K220085 ↗KRONUS IA-2 Autoantibody (IA-2Ab) ELISA Kit | Kronus, Inc. | 2023-08-24 | Traditional | 590 |
| K171731 ↗KRONUS IA-2 Autoantibody (IA-2Ab) ELISA Kit | Kronus, Inc. | 2018-01-19 | Traditional | 221 |
| K073590 ↗KRONUS IA-2 AUTOANTIBODY RIA ASSAY KIT | Kronus Market Development Associates, Inc. | 2008-04-10 | Traditional | 112 |
Known context: US. Match the intended use and design with the recorded category before treating it as applicable.
| Source fact | Recorded value |
|---|---|
| FDA product code | OIF [1] |
| Generic device category | Tyrosine Phosphatase (Ia-2) Autoantibody Assay [1] |
| Recorded scope | The device is used for the semi-quantitative determination of autoantibodies against tyrosine phosphatase (IA-2) in human serum as an aid in the diagnosis of Type 1 diabetes mellitus (autoimmune mediated diabetes). [1] |
| Recorded class | 2 [1] |
| Regulation | 866.5660 [1] |
| Medical specialty | Immunology [1] |
Use this checklist to gather your business or product details before speaking with a specialist. The items below explain what to record and suggest useful supporting documents. You can add your own answers in the editable project brief.
Put your proposed label and design beside the quoted definition. Record matching facts, differences and missing facts separately; naming the category alone cannot resolve scope.
Useful evidence: Proposed indication/design and a definition-to-product comparison with source locators.
Record the applicable paragraph, conditions and cross-referenced limitations after specialist review. Keep a claimed exemption separate from actual establishment, listing and quality-system responsibilities.
Useful evidence: Dated classification/route rationale and the current provisions relied on, with unresolved conditions.
Choose a named record above. Put your proposed claim beside its actual indications-for-use statement. Record different patients, users, anatomy, settings and output claims; do not treat a shared code as proof of equivalence.
Useful evidence: Your draft indications for use + the selected official summary and its exact page.
For each comparison, record the different materials, hardware, software functions and operating conditions. Link each difference to existing evidence or an unresolved evaluation task.
Useful evidence: A three-column matrix: comparator fact / your design fact / evidence or unresolved gap.
This recent cohort has fewer than 20 valid date pairs, so it supplies no median or percentile benchmark. Ask for a schedule based on actual preparation, evidence gaps, interactions and response assumptions; keep any historical decision context separately dated.
Useful evidence: Document/test readiness, unresolved route/evidence tasks and the assumptions behind the specialist’s proposed sequence.
Read the official document in context. The audit details identify the precise locators and preserved versions used for this page.
2026-10-05 · retrieved 2026-10-06
Source key D01 · snapshot 936de5f5d47b9293b702fc32512a79173969fb788c74a63d9b91abe73f3b86a5
2026-10-05 · retrieved 2026-10-06
Source key D01 · snapshot 5a86994ba49a37e71e09be96803fd51981c6c43eaa96caab41aea2b188bfe002
Thu, 01 Oct 2026 22:01:48 GMT · retrieved 2026-10-06
Source key D04 · snapshot 2fb992918a3879de132b47a33c856da2b3234ee3d96cfd79fab03acf30512496
Confirm the facts, scope and contact preference before sharing your project. Preparing this page sends no provider outreach.
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