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.
Enzymatic Radiochemical Assay, Tobramycin
Clinical Toxicology
Enzymatic radiochemical assay for tobramycin is a laboratory method combining enzymatic and radiochemical techniques to quantify tobramycin serum concentrations in patients undergoing aminoglycoside antibiotic therapy, where monitoring is critical to maintain efficacy and prevent nephrotoxicity and ototoxicity. FDA Class 2 classification applies, requiring 510(k) premarket notification. The product code is LDO, regulated under 21 CFR 862.3900, in the Clinical Toxicology specialty. Third-party review is available.
510(k) Clearances
3 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.