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.
Light Green
Hematology
Light green is a synthetic dye used as a histological counterstain to color cytoplasm, collagen, and other acidophilic tissue structures green in conjunction with other nuclear stains such as iron hematoxylin, frequently employed in Masson's trichrome and similar protocols. It is classified as an FDA Class 1 device under 21 CFR 864.1850, indicating minimal risk and general controls. Product code HYS falls under the Hematology medical specialty. This device is exempt from Good Manufacturing Practice (GMP) regulations.
510(k) Clearances
1 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.