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

Ordering Code5658
Test NameHomovanillic Acid w/Creat, 24 Hr Ur
AliasHVA
Homovanillic Acid with Creatinine, 24 Hr Urine
Preferred SpecimenUrine, 24 Hour
Preferred Container24 Hour Urine Container
Optimum Volume10 mL
Collection InstructionsPatient 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 InstructionsAliquot 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 RequirementsOahu: Frozen
Airline: Frozen
Specimen StabilityAmbient: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 Days
Rejection CriteriaUnpreserved urine received frozen with pH >6
Avail. StatNO
Analytic Time10 Days
MethodologyHigh 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 April 19, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Total VolumeALLSee report.
Creatinine, 24 Hr UrineALLSee report.
HVA, 24 Hr UrineALLSee report.