VMA (Vanillylmandelic Acid)

<p>Collect 24 hour urine (instructions below). Send 10.0mL acidified urine refrigerated in a screw-capped plastic urine cup. Record total volume on test requisitiion and specimen label.</p> <p>Collect urine with 25mL of 6N HCl at start of collection to maintain pH between 1 and 3. Refrigerate urine during collection (critical). Mix the collection well before removing aliquot.</p> <p><strong>Without preservative, &nbsp;urine aliquot must be sent frozen. Total 24hr urine volume is required for testing</strong></p>

 

Room Temperature 3 days, Refrigerated 7 days, Frozen 1 month

By Report*

2-4 Days Setup Mon, Wed, Fri

<p>Diagnose pheochromocytoma, VMA is of value for evaluation of hypertension, diagnose and follow up neuroblastoma, ganglioneuroma, and ganglioneuroblastoma. Most neuroblastoma patients excrete excess HVA in 24-hour collections. If VMA and HVA are both used in workup, up to 80% of all cases will be detected.</p>

UVMAW