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HelpTest ID BLOD0672 Thrombin Time
Specimen Type/Requirements
Blue top (Sodium Citrate) - Plasma, Double Spun Platelet Poor
See Coagulation Testing and Platelet Poor Plasma Preparation
This test requires its own frozen aliquot. Frozen plasma can only be thawed once.
The 3.2% Sodium Citrate tube must be filled to appropriate volume to acquire the 9:1 blood to anticoagulant ratio that is critical for valid results.
Test is affected by hemolysis. Test is not affected by lipemia.
Specimen Volume
| Preferred Volume | 2.0 mL |
|---|---|
| Minimum Volume | 0.7 mL |
Performed Test Frequency
Monday through Sunday
Methodology
Mechanical
Performing Lab
Sanford Laboratories Sioux Falls
CPT
85670
Stability/Transport
| Room Temperature | 8 hours | |
|---|---|---|
| Refrigerated | Not Acceptable | |
| Frozen | 1 month | Preferred for transport |
If testing is not performed within 8 hours, freeze a platelet poor plasma aliquot.
Useful For
Thrombin Time is a screening test for normal levels of functional fibrogen.