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GLUCOSE, serum, plasma, or whole blood (087-0039) CPT 4 Code: 82947 (Limited Coverage Test (NCD) Test Order Mnemonic: GLU for serum or plasma. AC GLUC for whole blood. Lab: Clinical Chemistry Request Form: Routine Chemistry Form 1 or Blood Gas Lab Slip Collection: Routine venipuncture. Do not draw specimen from an arm receiving intravenous transfusion. Storage Instructions: Whole Blood: Samples sent to Blood Gases should be transported within 15 minutes. Serum/Plasma: Centrifuge the specimen to separate the serum from the red cells within 2 hours of collection and refrigerate. Specimens drawn in gray-topped tubes need not be separated if delivered to the laboratory within 8 hours of collection. Causes for Rejection: Gross hemolysis, improperly labeled specimen, sample QNS, sample not processed properly Availability: Samples are accepted 24 hours per day at Sample Management, Room 5.136 McCullough. Turnaround Time: Routine: 4 hours; STAT: 1 hour; Whole Blood to Critical Care: 20 minutes. Special Instructions: Indicate on slip and announce to lab personnel if sample is a CODE; sample will receive priority analysis. Specimen: Blood Volume: 1 mL for whole blood analysis or 3 mL serum or plasma Minimum Volume: 0.5 mL (0.3 for Neonates) for whole blood analysis or 0.5 mL serum or plasma Container: Heparinized syringe or green-topped (heparin) vacutainer tube (preferred specimen is anticoagulated with sodium or lithium heparin) for whole blood; SST (gel-barrier), gray-topped tube, or red-topped tube for serum or plasma. Reference Ranges: Glucose, neonate (up to 30 days): 40-110 mg/dL; Glucose, adult (infant to adult): 70-110 mg/dL Critical Values: Adults: <50 or >450 mg/dL; Neonates: <30 or >300 mg/dL Test Method: End Point Colorimetric, oxidase Reviewed/revised December 2007 by Dennis Davis |
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