Thrombotic Risk, Inherited Etiologies (Most Common) with Reflex to Factor V Leiden
| CPT Code(s): | 85730; 85240; 83090; 81240; 85307; If reflexed add 81241 |
| Specimen Required: | Patient Preparation:Fasting preferred. Refer to Specimen Handling at reliancediagnosticslab.com for hemostasis/thrombosis specimen handling guidelines. Collect:Lt. blue (sodium citrate) AND lavender (EDTA) or pink (K2EDTA) ANDserum separator tube or green (sodium or lithium heparin). Specimen Preparation:Serum Separator Tube or Green (sodium or lithium heparin) must be centrifuged and serum or plasma separated within 1 hour of collection. Transfer 1 mL centrifuged serum or plasma to RDL Standard Transport Tube and label centrifuged tube for homocysteine testing. (Min: 0.5 mL) ANDTransport two 2 mL aliquots platelet-poor plasma (sodium citrate) (Min: 1 mL/aliquot) AND Transport 5 mL whole blood (EDTA).(Min: 1 mL) Storage/Transport Temperature:Light blue (sodium citrate): CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Lavender whole blood and Serum or Green (sodium or lithium heparin): Refrigerated. Stability:Light blue (sodium citrate): Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 weeks Lavender whole blood: Ambient: 2 hours; Refrigerated: 1 week; Frozen: Unacceptable Serum or Green (sodium or lithium heparin): Ambient: 1 hour; Refrigerated: 1 week; Frozen: 3 months |
| New York DOH Approval Status: | This test is New York DOH approved. |
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