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PLATELET AGGREGATION (089-0469) CPT 4 Code: 85576 Test Order Mnemonic: PLATAG Test Includes: (1) Aggregation responses to Arachidonic acid, ADP, Collagen, Epinephrine, and Ristocetin at various concentrations; (2) Interpretation of responses by Hematopathologist. Request Form: Hematology A; must have consultation request. Lab: Hematopathology Patient Preparation: Prior to drawing sample, patient must be fasting (8 hours) and must not have taken aspirin or aspirin-like drugs (7-10 days). May be invalid if patient has thrombocytopenia. Collection: Special tubes must be obtained from the lab. Sample should be drawn without trauma using a two-syringe method. Causes for Rejection: QNS, clotted, improperly collected sample. Availability: Must be scheduled with laboratory. Hematopathology, Room 5.142, McCullough. Turnaround Time: 4 hours Special Instructions: Test must be scheduled with the lab. Control must be furnished with patient’s blood. Contact laboratory (409-772-3318) for detailed instructions. Specimen: Blood Volume: 30 ml preferred; 20 ml blood (minimum) Container: Special tubes prepared by lab: 15 ml conical centrifuge tube with 1.0 ml sodium citrate Test Method: Photo-Optical Detection Interfering Substances: Aspirin or aspirin containing products, wine, or other drugs known to contain platelet function inhibitors ingested within 7-10 days of procedure. Reviewed 10/16/06 by W.Russo, MT(ASCP) |
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