ADAMTS13 ACTIVITY WITH REFLEX TO INHIBITOR

Test Documentation
Components
In ADMATS13 Activity is <=30, ADAMTS13 inhibitor will be performed at an additional charge.

Specimen Required
Draw blood in a light blue 3.2% sodium citrate tube. See appendices for coagulation test collection instructions. Send 1.0 mL platelet-poor plasma (0.5 mL minimum) frozen in a screw-capped plastic vial. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Rejection Criteria
Hemolyzed specimens, serum, EDTA plasma, clotted specimens

Methodology
Immunoassay

Stability
Room temperature: Unacceptable; Refrigerate: Unacceptable; Frozen (-20°C): 21 days; Frozen (-70°C): 6 months

Reference Range
ADAMTS13 Activity: 68-163% Activity
ADAMTS13 Inhibitor: <0.4 BEU

Performed
Sunday-Thursday

Turnaround Time3-6 days
Test CodeADMTS
CPT-4 Code (s)
Activity: 85397
Inhibitor: 85335, if performed, at an additional charge
LOINC Codes
ADAMTS13 Activity: 53622-7
ADAMTS13 Inhibitor: 40824-5

Warde
Medical
Laboratory