Test Details
Mnemonic
AATHR
Ordering Code
3500044
CPT-4 Code(s)
81240; 85300, 85303, 85306, 85307, 85379, 85384, 85390, 85610, 85613, 85670, 85730 (others as approp cost)
Specimen Information
Patient Preparation
Draw prior to starting anticoagulants and thrombolytic therapy.
Collect
Yellow ACD A and Light blue 3.2 % sodium citrate
Specimen Preparation
Whole blood and plasma are required. Whole blood: Draw blood in a yellow ACD and send 6.0 mL whole blood room temperature.
Plasma: Draw blood in 3 - 4 light blue 3.2 % sodium citrate tubes. Send 6.0 mL plasma frozen in 1.0 mL aliquots in 6 plastic screw-capped vials.
Ship all specimens together and label properly as "whole blood" or "plasma".
Plasma: Draw blood in 3 - 4 light blue 3.2 % sodium citrate tubes. Send 6.0 mL plasma frozen in 1.0 mL aliquots in 6 plastic screw-capped vials.
Ship all specimens together and label properly as "whole blood" or "plasma".
Alternate Specimen
Whole blood: Lavender EDTA
Minimum Volume
3.0 mL whole blood, 5.0 mL plasma in 1 mL aliquots
Transport Temperature
Blood: Room temperature; Plasma: Frozen
Rejection Criteria
Gross hemolysis, lipemia or icteria
Stability
Plasma:
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
Whole blood:
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 14 days
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
Whole blood:
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 14 days
Methodology
Latex Immunoassay, Chromogenic Assay, Direct Mutation Analysisi, Clauss, Optical Clot-Based
Reference Range
See report
Performing Laboratory
Mayo Clinic Laboratories
New York DOH Approval Status
Yes