PLASMA THROMBIN TIME (THROMBIN CLOTTING TIME)
Purpose of the test:
Detects fibrinogen deficiency or defect
Helps confirm diagnosis of DIC and liver disease
Monitors effectiveness of heparin, streptokinase, or urokinase
Time before test results available:
Test requires only a few minutes in the laboratory. Time before
results are reported to the doctor or patient varies from a few
minutes to a few days.
Thrombin times range from 10 to 15 seconds. Test results are
usually reported with a normal-control value.
What "high" or "increased" may indicate:
Effective heparin therapy
If DIC is suspected, an additional test for fibrin split products
is also necessary
Taking these drugs may affect test results:
Other factors that may affect test results:
If tourniquet is applied on the arm too long (over 1 minute), it
may cause an inaccurate test result. Request another sample to be
collected to ensure accuracy.
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