Research Article

Development and Evaluation of an In-House ELISA to Detect Anti-FcεR1α IgG Autoantibodies in Chronic Spontaneous Urticaria Patients

Table 3

Validation of cut-off value in the second cohort.

CSUHealthyTotal

ELISA +11411125PPV 91.20%
ELISA -2139141NPV 98.58%
Total116150266
Sensitivity 98.28%Specificity 92.67%

Cut-off value was at 936.7 ng/ml.