Test directory: Homovanillic Acid w/Creat, 24 Hr Ur

Ordering Code 5658
Test Name Homovanillic Acid w/Creat, 24 Hr Ur
Alias HVA
Homovanillic Acid with Creatinine, 24 Hr Urine
Preferred Specimen Urine, 24 Hour
Preferred Container 24 Hour Urine Container
Optimum Volume 10 mL
Collection Instructions Patient Preparation:
It is preferable for the patient to be off medications for three days prior to collection. However, common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference. Patient should avoid alcohol, coffee, tea, tobacco and strenuous exercise prior to collection
Instructions:
Store urine refrigerated during collection.
Handling Instructions Aliquot 10mL of well mixed 24-hour urine specimen and ship frozen. Record 24-hour urine volume and patient's age on test request form and on urine container.
Transport Requirements Oahu: Frozen
Airline: Frozen
Specimen Stability Ambient: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 Days
Rejection Criteria Unpreserved urine received frozen with pH >6
Avail. Stat NO
Analytic Time 10 Days
Methodology High Performance Liquid Chromatography with Electrochemical
Detection (HPLC)
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of May 9, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Total Volume ALL See report.
Creatinine, 24 Hr Urine ALL See report.
HVA, 24 Hr Urine ALL See report.