A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

THROMBIN CLOTTING TIME

Test Code
TT


Preferred Specimen
LIGHT BLUE


Minimum Volume
Tube must be full


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, short draw tubes, clotted speciman.  Ulttracentrifuge grossly lipemic samples.


Limitations
Anticoagulant therapy from unfractionated heparin, Hirudin, direct thrombin inhibitors, fibrinolytic therapy, and antifactor Xa inhibitor may prolong results.


Clinical Significance
Thrombin time assay designed to be performed for the detection of heparin.  TT can also be used to detect the presence of FDP (fibrin/fibrinogen degradation products). hereditary or acquired qualitative and quantitative fibrinogen abnormalities and increased fibrinolysis.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.