Test ID: Z2401
CPT code: 85635
LOINC: 6683-7
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: Diagnosis of fibrinogen deficiency, both congenital and acquired, as well as screen for dysfibrinogenemia. Normal values for reptilase time when thrombin time is prolonged suggests the presence of heparin or a direct thrombin inhibitor.
Methodology: Clot-based assay