METANEPHRINES, FRACT, FREE, LC/MS/MS, PLASMA

Handling: PATIENT PREPARATION: PATIENTS SHOULD BE RELAXED IN EITHER A SUPINE OR UPRIGHT POSITION BEFORE BLOOD IS DRAWN. PATIENT SHOULD AVOID ALCOHOL, COFFEE, TEA, TOBACCO AND STRENUOUS EXERCISE PRIOR TO COLLECTION. OVERNIGHT FASTING IS PREFERRED. 2.5 ML PLASMA COLLECTED IN AN EDTA (LAVENDER-TOP) TUBE. INSTRUCTIONS: DRAW SPECIMEN IN A PRE-CHILLED EDTA LAVENDER-TOP VACUTAINER (TM). THE WHOLE BLOOD SAMPLE SHOULD BE KEPT ON WET ICE UNTIL CENTRIFUGED (PREFERABLY AT 4 DEGREES C) TO SEPARATE THE PLASMA WITHIN 2 HOURS OF VENIPUNCTURE. AFTER CENTRIFUGATION, THE PLASMA SHOULD BE TRANSFERRED TO A PLASTIC, LEAK-PROOF VAIL AND IMMEDIATELY REFRIGERATED., 1.5 ML, REFRIGERATED (COLD PACKS)Refrigerated: 14 days, Frozen: 14 days