25470:COAGULATION STUDY, PRESURGICAL PANEL 2

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25470:COAGULATION STUDY, PRESURGICAL PANEL 2
Methodology: Photo-Optical Clot Detection (PT, APTT) / Automated Blood Cell Counter (Plt Ct) / Whole Blood Platelet Aggregation (PFA)
Edit Date: 6/6/2008
Components: Activated Partial Thromboplastin Time (APTT) / Platelet Count (PLT CT) (CBC) / Prothrombin Time (PT) / Platelet Function Analysis (PFA)
Performed: Daily
Released: Same day as tested
CPT Code: 85049 / 85576 / 85610 / 85730
Specimen Collection Details
Collection: Three specimens required: Two 4.5 mL light blue top tubes (sodium citrate) and one 4 mL lavender top tube (EDTA). Collect by careful venipuncture to avoid tissue fluid contamination or hemolysis. Do not use needles smaller then 23 gauge. Fill blue top tube to maximum, at least 90% full. Mix by gentle inversion. NOTE: this panel includes a PFA test, performed on whole blood, not plasma, and is stable only 4 hours from collection. If the PFA specimen will not arrive at laboratory within 4 hours, PFA test cannot be perfomed, in which case it may be necessary for the patient to have specimen colleced at a Patient Service Center. Alternatively, order Presurgical Panel 1 (25440) which does not include the PFA test.
Handling: Due to short stability, specimens must be sent STAT to arrive at the laboratory within 4 hours. Refrigerate the lavender top tube and one blue top tube. Keep capped in original tubes. Remaining blue top tube is for PFA test. Do not centrifuge. Keep ambient, and note on tube, “PFA – keep ambient.” Call for STAT pick-up.
Standard Volume: Two 5 mL light blue top tubes (sodium citrate) and one 4 mL lavender top tube (EDTA).
Minimum Volume: One 5 mL light blue top tube (sodium citrate) uncentrifuged, kept ambient, and one 4 mL lavender top tube (EDTA).
Transport: Original tubes refrigerated, and one blue top tube, labeled “PFA – keep ambient.” Must be sent STAT to reach the laboratory within 4 hours.
Comments: Withdraw slowly when drawing from heparinized lines, and discard at least 10 mL of blood to clear before drawing specimen. Heparin interferes with most clotting assays.
Rejection Criteria: Serum; visible fibrin; moderate to marked hemolysis; PFA specimen centrifuged; specimen received in laboratory beyond the stated stability.
MEDICARE MAY REQUIRE A SIGNED ADVANCE BENEFICIARY NOTICE (ABN) FOR THIS TEST