Specimen: 2 mL (1 ml min.) serum from 1 SST. Ship refrigerated or frozen.
Stability (Room): 6 hrs
Stability (Refrigerated): 1 week
Stability (Frozen): 2 weeks
Method: Enzyme Immunoassay
Comment: Also see EXTRACTABLE NUCLEAR ANTIGENS.
Price: Contact Medilab
Turnaround time (TAT): 10 – 15 days
Usage: Smith antibodies are specific for Lupus erythematosus occuring in nearly 30%of these patients. It is a component of extractable nuclear antigens also seen in other connective tissue disorders. This assay is useful for evaluating patients with signs and symptoms of a connective tissue disorder in whom ANA is positive.
Disease: Autoimmune disorders
Home Collection: Available
Pre-test Information: No special preparation required