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.
Autoantibodies, Acetylcholine Receptor, Acetylcholine Blocking And Non-Blocking
Immunology
The Acetylcholine Receptor Autoantibody (Blocking and Non-Blocking) device is an immunoassay used as an aid in the diagnosis of myasthenia gravis, an autoimmune disease characterized by exercise-induced muscle weakness. The assay detects autoantibodies in serum that interfere with the binding of acetylcholine at the neuromuscular junction, including both blocking and non-blocking antibody types. It is an FDA Class 2 device regulated under 21 CFR 866.5660 in the Immunology specialty, with product code NST, requiring 510(k) clearance. Third-party review is available. It is not an implant and does not provide life-sustaining support.
510(k) Clearances
4 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.