Cleared Traditional

SPQ TEST SYSTEM II FOR FIB (SERUM PROTEIN QUANTI.) (K900939) - FDA 510(k) Clearance

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

K900939 · Incstar Corp. · Hematology device
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May 1990
Decision
77d
Days
Class 2
Risk

K900939 is an FDA 510(k) clearance for the SPQ TEST SYSTEM II FOR FIB (SERUM PROTEIN QUANTI.). Classified as System, Fibrinogen Determination (product code KQJ), Class II - Special Controls.

Submitted by Incstar Corp. (Stillwater, US). The FDA issued a Cleared decision on May 16, 1990 after a review of 77 days - a notably fast clearance cycle.

This device falls under the Hematology FDA review panel, regulated under 21 CFR 864.7340 - 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 Incstar Corp. devices

Submission Details

510(k) Number K900939 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 28, 1990
Decision Date May 16, 1990
Days to Decision 77 days
Submission Type Traditional
Review Panel Hematology (HE)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
36d faster than avg
Panel avg: 113d · This submission: 77d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KQJ System, Fibrinogen Determination
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 864.7340
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.

Regulatory Peers - KQJ System, Fibrinogen Determination

All 27
Devices cleared under the same product code (KQJ) and FDA review panel - the closest regulatory comparables to K900939.
HemosIL Fibrinogen-C
K251968 · Instrumentation Laboratory (IL) Co. · Jul 2025
HEMOSIL FIBRINOGEN-C
K073367 · Instrumentation Laboratory CO · Dec 2007
DADE THROMBIN REAGENT
K050928 · Dade Behring, Inc. · Jun 2005
IL TEST FIBRINOGEN-C
K931721 · Instrumentation Laboratory CO · Aug 1993
QBC FIBRINOGEN
K920258 · Bd Becton Dickinson Vacutainer Systems Preanalytic · Jun 1992
FIBRINOGEN ASSAY KIT
K841020 · Helena Laboratories · May 1984