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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 # |
PROTIME
MessageProtime: TUBE MUST BE FULL. DO NOT DRAW FROM HEPARIN LOCK.
Test Code
PT
Preferred Specimen
LIGHT BLUE
Minimum Volume
Tube must be full.
Specimen Stability
24 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, short draw tubes, clotted specimens. Ultracentrifuge grossly lipemic specimens.
Clinical Significance
Protime measures the functional activity of the extrinsic and common coagulation pathways and the generation of thrombin and conversion of fibrinogen to fibrin of the clotting mechanism. PT also measures deficiencies of Factors I (fibrinogen), Factor V, Protein C, and Protein S.