Cleared Traditional

K920981 - RISTOCETIN COFACTOR ASSAY/VON WILLEBRAND FACT ASSA (FDA 510(k) Clearance)

Class II Hematology device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K920981 · Medical Diagnostic Technologies, Inc. · Hematology device
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Apr 1992
Decision
46d
Days
Class 2
Risk

K920981 is an FDA 510(k) clearance for the RISTOCETIN COFACTOR ASSAY/VON WILLEBRAND FACT ASSA. Classified as Test, Qualitative And Quantitative Factor Deficiency (product code GGP), Class II - Special Controls.

Submitted by Medical Diagnostic Technologies, Inc. (Ventura, US). The FDA issued a Cleared decision on April 17, 1992 after a review of 46 days - a notably fast clearance cycle.

This device falls under the Hematology FDA review panel, regulated under 21 CFR 864.7290 - the FDA hematology device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

View all Medical Diagnostic Technologies, Inc. devices

Submission Details

510(k) Number K920981 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received March 02, 1992
Decision Date April 17, 1992
Days to Decision 46 days
Submission Type Traditional
Review Panel Hematology (HE)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
67d faster than avg
Panel avg: 113d · This submission: 46d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code GGP Test, Qualitative And Quantitative Factor Deficiency
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 864.7290
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Hematology devices follow this clearance model.

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