# K180607: Steroid 21-Hydroxylase Antibody (21-OHAb) ELISA Kit

- Pathway: 510(k) (Traditional)
- Applicant: Kronus, Inc.
- Decided: Nov 23, 2018 after 261 days
- Product code: PCG (21-Hydroxylase Antibody (21-Ohab))
- Device class: 2
- Regulation: 21 CFR 866.5660
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
No later device cites it as a predicate yet.
0 of 1 device in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA’s file for it is a 510(k) statement, which names no predicate.

## Indications for use
The KRONUS Steroid 21-Hydroxylase Autoantibody (21-OHAb) ELISA Kit is for the qualitative determination of antibodies to steroid 21-hydroxylase (21-OH) in human serum. The Steroid 21-Hydroxylase Autoantibody (21-OHAb) ELISA Kit is useful as an aid in the diagnosis of autoimmune adrenal disease, whether expressed as autoimmune Addison’s disease (isolated) or Addison’s disease as part of the more complex autoimmune polyglandular syndrome (APS), type I or II. The assay result is to be used in conjunction with other clinical and laboratory findings and is not a substitute for functional testing required to diagnose adrenal insufficiency.

Source page: https://510kreport.com/device/K180607
Methodology: https://510kreport.com/methodology