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anti-SS-A (ro), anti-SS-B (La), and anti-SS-C antibody test

a blood test to measure the presence of antinuclear antibodies, which indicates Sjögren's syndrome.
References in periodicals archive ?
Interestingly, the anti-SS-A antibody level dropped to 16,439 U/mL (from 162,143 U/mL) 2 weeks after starting plasma exchange treatment, and dropped to 257 U/mL when the platelet count returned to normal range after the completion of plasma exchange treatment.
Anti-SS-A antibody has been reported to be associated with a subtype of lupus erythematosus, chilblain lupus erythematosus, which is characterized by erythematosus lesions induced by a cold, damp climate and positive anti-SS-A serology.
Abnormal immunoglobulins in these patients may contribute to the pathogenesis of acute TTP, since the abnormal immunoglobulins (such as anti-SS-A antibody) may interrupt the normal inhibition of platelet aggregation or inhibit the activity of vWF-cleaving protease.