Assist in diagnosing acquired (idiopathic) or inherited thrombotic thrombocytopenic purpura (TTP).
Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.
Transfer 1 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Serum, EDTA plasma, clotted or hemolyzed specimens.
Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks
Effective November 17, 2014
Greater than 60 percent
ADAMTS13 levels of less than 10 percent may be associated with either inherited (Upshaw-Schulman Syndrome) or acquired thrombotic thrombocytopenic purpura (TTP).
A variety of medical conditions may result in a mild to moderate deficiency of ADAMTS13 activity. Recent plasma exchange therapy may raise the observed ADAMTS13 activity.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
- von Willebrand Factor Cleaving Protease