Test Description not updated

50 mL (10 mL min.) aliquot of 24 hour Urine. Collect urine with appropriate volume of 50% HCl to maintain pH between 1-2. Do not use concentrated HCl. Record 24 hour volume on test request form and urine container. Ship refrigerated or frozen. Patient should strictly avoid bananas, walnuts, tomatoes, pineapples, plums, gooseberries, mirabelles, melons, avocados, aubergines, kiwi fruits and drugs like methocarbamol, mephenesin, guaiphenesis, paracetamol, salicylic acid and strenuous exercise at least 48 hours before and during specimen collection.

LC-MS MS

Sample Wed Sat by 9 am; Report 2 days

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Patient should strictly avoid bananas, walnuts, tomatoes, pineapples, plums, gooseberries, mirabelles, melons, avocados, aubergines, kiwi fruits and drugs like methocarbamol, mephenesin, guaiphenesis, paracetamol, salicylic acid and strenuous exercise at least 48 hours before and during specimen collection.