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Smith (SM) Antibody:

Fasting Required: No fasting required
Lab: Quest Diagnostics
Specimen: Blood
Results: Average processing time 3-5 days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.

Description: Smith Antibody (Sm) is highly specific for systemic lupus erythematosus (SLE). Smith Antibody is also detected in approximately 15% of patients with SLE. Smith Antibody is detected in more than half of young African-American women with SLE.

Alternative Name(s): Sm or Smith Antibody