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REPTILASE (089-0514) CPT 4 Code: 85635 Test Order Mnemonic: REPTILASE Applies to: Useful in differentiating causes of prolonged thrombin times. Lab: Hematopathology Request Form: Hematology A Collection: Routine venipuncture; discard 1st mL of blood or collect other tubes (EDTA, red-topped) prior to collecting sample in blue-topped (citrate) tube. Storage Instructions: Viable for 4 hours at room temperature. If time from draw to receipt in the laboratory is to be greater than 4 hours, centrifuge the specimen; remove the plasma from red cells and snap freeze (-70°C) plasma. Snap frozen plasma is viable indefinitely. Causes for Rejection: 3.8% sodium citrate tubes, QNS, clotted, severely hemolyzed specimen, specimen greater than 4 hours old, identification error, sample processed and/or stored improperly. Availability: Samples are accepted 24 hours per day at Sample Management, room 5.136 McCullough Bldg. Turnaround Time: STAT: 1 hour; ROUTINE: 4 hours Special Instructions: Deliver sample to lab within ½ hour for best results. Accepted up to 4 hours from draw. Specimen: Blood Volume: 4.5 mL blood Container: 3.2% sodium citrate tube (light blue-top); [NOTE: 3.8% sodium citrate tubes will NOT be accepted] Reference Ranges: 13.6 – 19.2 seconds Test Method: Electro-magnetic detection Interfering Substances: none Revised 1/09/06 by W.Russo, MT(ASCP) |
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