CATECHOLAMINES 24 HOUR URINE

Handling: PATIENT PREPARATION: IT IS PREFERABLE FOR THE PATIENT TO BE OFF MEDICATIONS FOR THREE DAYS PRIOR TO COLLECTION. COMMON ANTIHYPERTENSIVES (DIURETICS, ACE INHIBITORS, CALCIUM CHANNEL BLOCKERS, ALPHA AND BETA BLOCKERS) MAY CAUSE MINIMAL OR NO INTERFERENCE. PATIENT SHOULD AVOID TOBACCO, TEA, COFFEE, AND STRENUOUS EXERCISE PRIOR TO COLLECTION. 10 ML ALIQUOT FROM A 24 HOUR COLLECTION PRESERVED WITH 6N HCL AT THE START OF COLLECTION. UNPRESERVED SPECIMENS MUST BE FROZEN. RECORD TOTAL VOLUME ON BOTH THE TRANSPORT CONTAINER AND THE TEST REQUISITION., 5 ML, ROOM TEMPERATURE, Refrigerated: 30 days, Frozen: 49 days