Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

HOMOVANILLIC ACID (HVA), RANDOM URINE

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB2502         Geisinger Epic ID: 47278

SPECIMEN COLLECTION
Specimen type:
Urine
Preferred collection container:
Specimen required:
10 mL random urine
Patient preparation:
Patient should avoid alcohol, coffee, tea, tobacco, and strenuous exercise before collection. It is preferable for the patient to be off medications for three days before collection. However, common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference.

SPECIMEN PROCESSING
Specimen processing instructions:
Lab personnel (to be determined per site) will test the pH of the urines and adjust to less than 3.0 using 6N HCl before Referred Testing ships the specimen. Urine without preservative is acceptable if pH is below 6 and the sample is shipped frozen. 
Transport temperature:
Refrigerated.
Specimen stability:
Room temperature: 10 days. Refrigerated: 14 days. Frozen: 90 days.
Rejection criteria:
pH not adjusted.

TEST DETAILS
CPT code(s):
82570, 83150
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Methodology:
High Performance Liquid Chromatography (HPLC)
Synonyms:
Quest test code 218077, Homovanillic Acid
HVARU
Clinical significance:
This analyte is valuable in the identification of patients with neuroblastoma. 80% of neuroblastoma patients will have elevated urinary homovanillic acid (HVA) and or vanillylmandelic acid (VMA).

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Tuesday, Thursday morning.    
Performed stat? No
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