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Test Code ADAMST ADAMST13 Activity and Inhibitor

Reflex Tests

ADAMST13 Antibody if indicated

Collection Container

Light Blue

Specimen Required

Platelet poor plasma, whole blood if received in laboratory within 4 hours of collection

Other Acceptable Specimen Types

serum-refrigerated up to 7 days

Specimen Volume

Platelet poor plasma-two -1 ml aliqouts,Whole blood-2.7 mL

Minimum Specimen Volume

Platelet poor plasma-two-0.5 mL aliquots,Whole blood-2.7 mL.

Special Handling Instructions

Spin down,remove plasma and spin again.Double centrifued specimen is critical for accurate results as platelet contamination may cause spurious results.

Transport Temperature

Platelet poor plasma-frozen,whole blood-ambient temperature

Specimen Stability

Whole blood-4 hours

Reasons for Rejection

Hemolyzed,clotted, Whole blood >4 hours old

Methodology

FRET-Based Kinetic Assay

Reference Ranges

Reported with result

Turnaround Time

Activity: 1-3 days; Inhibitor: 2-4 days

Day(s) and Time(s) Performed

Monday-Friday

Additional Information

If the patient’s hematocrit exceeds 55%, the volume of citrate in the collection tube must be adjusted.

CPT Code

85397 -85335

Units of Measure

Activity=%,Inhibitor=inhibitor units

LOINC Code

34589-2