Technique: High Performance Liquid Chromatography (HPLC)
Technique: 50 ml. (10 ml. Minimum) well mixed aliquot of 24 Hour urine in a sterile screw capped plastic container. Collect urine with appropriate volume of 50% HCL (6N HCL) to maintain pH between 1- 3. Do not use concentrated HCL. Record 24 hour volume on test requisition form & urine container.
Technique: 2-8C
Sample Collection Instruction: The patient should strictly avoid plum, banana, Kiwis, walnut, avocado, eggplant, pineapple, tomato & drugs including paracetamol, melphalan, fluorouracil, isoniazid, salicylates, heparin, L - dopa, MAO inhibitors, promethazine, phenothiazines, imipramine & alcoholic beverages, tea/coffee, caffeine, tobacco & stressful exercise at least 3 days
before & during specimen collection.
