Test Code LAB324 Thrombin Time
Useful For
The thrombin time is used to screen for abnormalities in the conversion of fibrinogen to fibrin. These may be caused by qualitative or quantitative abnormalities of fibrinogen or by inhibitors, such as heparin or fibrin/fibrinogen split products.
Performing Laboratory
Asante Rogue Regional Medical Center (ARRMC)
Performing Department
Hematology
Specimen Required
Blue top tube - Refer to ORDER OF DRAW
Note: The ratio of blood to anticoagulant is critical.
Vacutainers must draw their full volume.
Syringe Draw:
2.7 mL blood in 3 mL Blue top tube
1.8 mL blood in 2 mL Blue top tube
Specimens will not be accepted if tubes are not filled to their correct volume.
If multiple tests are drawn, draw coagulation studies first or second
Specimen Minimum Volume
1 properly filled 2 mL Blue top tube
Specimen Stability Information
Specimen stable 4 hours unopened or opened, room temperature or refrigerated
Reject Due To
- Icterus
- Lipemia
- Hemolysis
- Quantity not sufficient (QNS)
- Lacking Two Patient Identifiers:
- 1-Patient's First & Last name
- 2-Patient's Date of Birth
Day(s) Performed
Monday through Sunday
Routine - within 6 hours after receipt of specimen in lab
ASAP - 2 hours after receipt of specimen in lab
STAT - 1 hour after receipt of specimen in lab
Method Name
Turbidimetric clot detection by measuring change in optical density
CPT Code Information
85670 - Thrombin time; plasma
Billing Code
2010700