Urine, Timed Collection
Quest Diagnostics San Juan Capistrano
Other Reference Test
10-20 mL 24 Hour Urine
24-Hour Urine Container
It is preferable for the patient to be off medications for three days prior to collection. However, common antihypertensives (diuretics, ACE inhibtiors, calcium channel blockers, alpha and beta blockers) cause minimal or no interferance. Patient should avoid alcohol, coffee, tea, tobacco (including use of nicotine patch), bananas, citrus fruits and strenuous exercise prior to collecion.
Room Temp: 7 Days; Refrigerated: 14 Days; Frozen: 49 Days
20 mL 24 Hour Urine
10 mL 24 Hour Urine
Adjust pH to <3.0 using 6N HCl. Urine without preservative is acceptable if pH is below 6 and sample is shipped frozen.
Creatinine, Norepinephrine, Epinephrine, Dopamine, Total Catecholamines (calculated) and VMA
82384, 84585, 82570 (x2)