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HelpTest Code HVAURN Homovanillic Acd/U
Additional Codes
80422
Specimen Type
Urine
Preferred Collection Container
Random or 24 hr urine no preservative
Collection Instructions
For 24 hour collecitons instruct the patient to void at 8:00 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period, i.e., 8:00 AM the next morning. Refrigerate during collection. Screw the lid on securely. Specimens should be transported promptly to the Clinical Laboratory. Container must be labelled with patient's full name, room number, date and time collection started, and date end time collection finished.
Collection Volume
4 mL aliquot from a well-mixed 24-hour or random collection
Minimum Collection Volume
1 mL aliquot from a well-mixed 24-hour or random collection
Testing Volume
1.0 mL
Rejection Criteria
Specimen types other than urine
Specimen Storage and Stability
Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 weeks
Day(s) and Time(s) Performed
Sunday, Tuesday, Wednesday, Thursday, Friday, Saturday
Test Alias
80422; HVA; 3-Methoxy-4-Hydroxy Phenylacetic Acid; 4-Hydroxy-3-methoxyphenylacetic acid
CPT Coding
83150
EPIC Code
LAB401
Methodology
Quantitative High Performance Liquid Chromatography - Tandem Mass Spectrometry
Acceptable Collection Container
Random or 24 hr urine no preservative
Transport
Refrigerated
Turn Around Time
2-6 days
Lab Department
Referred Testing
LOINC
Creatinine, Urine - per volume 2161-8
Creatinine, Urine - per 24h 2162-6
Homovanillic Acid - per 24h 2436-4
Homovanillic Acid Interpretation 49269-4
Homovanillic Acid - per volume 11144-3
Homovanillic Acid - ratio to CRT 13760-4
Total Volume 19153-6
Hours Collected 30211-7