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Test Code ADAMST ADAMST13 Activity and Inhibitor

Additional Information

If the patients' Hematocrit exceeds 55%, the volume of citrate in the collection tube must be adjusted.

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

Special Handling Instructions

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

Specimen Volume

Platelet poor plasma: two 1 mL aliquots, Whole blood: 2.7 mL

Minimum Specimen Volume

Platelet poor plasma: two 0.5 mL aliquots, Whole blood: 2.7 mL

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

Days and Times Performed

Monday - Friday

Turnaround Time

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

Reference Ranges

Reported with result

Units of Measure

Activity %, Inhibitor Units

CPT Code

85397, 85335

LOINC Code

34589-2

EMR Interface Order Code

33235