THROMBIN TIME

Test ID: Q0401

CPT code: 85670
LOINC: 3243-3
Specimen Type: Blue (sodium citrate)
Frequency: 2 – 3 days
Instructions: 1 mL Plasma from Blue-top (sodium citrate), Frozen, platelet poor plasma. FREEZE immediately
Text: Diagnoses fibrinogen deficiency, both congenital and acquired; identify heparin contamination of samples and direct thrombin inhibitor therapy.
Methodology: Human thrombin is mixed with the patient sample and clotting time is determined photometrically.

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