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.
Crystal Violet For Histology
Hematology
Crystal Violet for Histology is a triphenylmethane dye used in histological staining procedures to stain nuclei and certain tissue components violet-purple, and is also a component of the Gram staining technique for differentiating bacteria. It is regulated as an FDA Class 1 device, the lowest risk category, subject only to general controls without requiring premarket notification. The product code is ICF, regulated under 21 CFR 864.1850, in the Hematology medical specialty. This device is exempt from GMP requirements.
510(k) Clearances
5 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.