510(k) Predicate Finder
Find potential predicate devices for your 510(k) submission. Enter a K-number to find all clearances with the same product code, a three-letter product code to browse clearances directly, or search by device name.
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Describe your device and the Research Assistant searches 510(k)s, compares intended use, and drafts a predicate shortlist — with citations.
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Acid Phosphatase, Naphthyl Phosphate
Clinical Chemistry
The Acid Phosphatase, Naphthyl Phosphate test system (product code CKB) is an in-vitro diagnostic device used in clinical chemistry to measure acid phosphatase activity in serum using naphthyl phosphate as a chromogenic substrate under acidic conditions, with spectrophotometric detection of released naphthol. It is classified as FDA Class 2, indicating moderate risk, and requires a 510(k) premarket notification. It falls under regulation 21 CFR 862.1020 in the Clinical Chemistry medical specialty.
510(k) Clearances
24 matchesWhat is a Predicate Device?
A predicate device is a legally marketed device that a new 510(k) applicant uses to demonstrate substantial equivalence. The FDA's 510(k) pathway requires manufacturers to show that their device has the same intended use and similar technological characteristics as one or more predicate devices already cleared for commercial distribution.
Finding the right predicate is a critical step in 510(k) strategy. Manufacturers typically search for cleared devices with the same FDA product code, which groups devices by their intended use and regulatory classification. This tool helps you identify potential predicates by browsing all clearances within a product code.
Note that predicate devices must be legally marketed — they cannot be devices that were cleared but never commercialized, or devices subject to a mandatory recall. The determination of substantial equivalence considers intended use, technological characteristics, and performance data.