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| Year : 1991 | Volume
: 9
| Issue : 1 | Page : 51-55 |
Incidence Of Hidden Rheumatoid Factors In Seronegative Rheumatoid And Non-Rheumatoid Patients
V Lakshmi, R. R Rao, U. N Das
Correspondence Address:
V Lakshmi
 Source of Support: None, Conflict of Interest: None  | Check |
One hundred and eighty six RF negative samples from patients with rheumatoid arthritis, rheumatic diseases other than RA and non-rheumatic diseases were tested by Latex agglutination inhibition test (LAIT) for the presence of hidden RFs. 76% of sero-negative RA group were positive for LAIT. In the other 2 groups the incidence of positive LAIT was 55.5% and 33.3% respectively. The sensitivity and specificity of LAIT to detect hidden RFs were found to be 75.8% and 84% respectively. The positive and negative predictive values of the test were 94.7% and 47.7% respectively.
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