# K972220: Rheumatoid Factor Latex-Enhanced Immunoturbidimetric Test Kit

- Pathway: 510(k) (Traditional)
- Applicant: Randox Laboratories, Ltd.
- Decided: Sep 9, 1997 after 89 days
- Product code: DHR (System, Test, Rheumatoid Factor)
- Device class: 2
- Regulation: 21 CFR 866.5775
- Recalls of this device: 1 (0 Class I)
- 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.

## Recalls of this device
- Aug 9, 2019 · Class II · Z-0282-2020: The assigned value for Rheumatoid Factor over recovers against the reference material RF serum, 1st British standard from NIBSC. Ref = 64/002. The calibrator values have been adjusted to re-align to t

## Indications for use
The Randox Rheumatoid Factor Latex-Enhanced Immunoturbidimetric Test Kit is an invitro diagnostic reagent for the quantitative determination of rheumatoid factors (RF) in human serum. This test kit may be used to facilitate the detection and diagnosis of Rheumatoid Arthritis. RF have also been observed in the serum of patients with systemic lupus erythematosus, hepatitis, liver cirrhosis and syphilis. However, in these conditions the RF titre is much lower than in rheumatoid arthritis. This test kit must be used by suitably qualified personnel under appropriate laboratory conditions. RF calibrator and RF positive control are for use in the calibration and quality control of RF latex-enhanced immunoturbidimetric assays.

Source page: https://510kreport.com/device/K972220
Methodology: https://510kreport.com/methodology