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