THROMBIN TIME WITH REFLEX TO THROMBIN TIME 1:1 MIX

Test Documentation
Specimen Required
Draw blood in a light blue sodium citrate tube. See appendices for coagulation test collection instructions. Send 2.0 mL plasma (1.0 mL minimum) frozen in a screw-capped plastic vial. CRITICAL FROZEN.

Rejection Criteria
Serum, hemolyzed or non-frozen specimens

Methodology
Clotting

Stability
Room Temperature: 2 hours; Refrigerated: 4 hours; Frozen: 2 weeks

Reference Range
Thrombin Time:   14.7-19.5 seconds  
Thrombin Time 1:1 Mix:   14.7-19.5 seconds  

Performed
Monday-Saturday

Turnaround Time3-5 days
Test CodeTTFLX
CPT-4 Code (s)
85670 (plus 85670 if reflexed at an additional charge)
LOINC Codes
Thrombin Time   3243-3  
Thrombin Time, 1:1 Mix   33525-7  

Warde
Medical
Laboratory