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Test Description not updated
50 mL (10 mL min.) aliquot of random urine. Add 50% HCl drop by drop to bring the pH between 1–2. Do not use concentrated HCl. Ship refrigerated or frozen. Patient should strictly avoid bananas, wallnuts, 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
This test is used to diagnose and monitor a small subgroup of Carcinoid tumors (foregut Carcinoids) that produce predominately 5-hydroxytryptophan (5-HTP), but very little Serotonin and Chromogranin A.
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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.