Homovanillic Acid (HVA) 24 Hour Urine Test
Short Name: HVA 24-Hour Urine Test
Also known as: HVA Urine Test, Homovanillic Acid Test, Dopamine Metabolite Test, Catecholamine Metabolite Urine Test, HVA 24h Urine Assay
Homovanillic Acid (HVA) 24 Hour Urine Test test available at DNA Labs India for ₹5,500. Uses HPLC-EC (High-Performance Liquid Chromatography with Electrochemical Detection) on 24-hour urine samples. Results in Samples collected on Wednesday or Saturday by 9:00 AM. Reports available on the following Friday or Tuesday respectively. Results are delivered via the online portal, email, or WhatsApp.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
The HVA 24-Hour Urine Test is used to screen for catecholamine-secreting tumours such as neuroblastoma and pheochromocytoma, to monitor treatment response in patients with neuroblastoma, and to evaluate patients with suspected inborn errors of catecholamine metabolism. Elevated urinary HVA levels indicate increased dopamine turnover, which may be associated with neural crest-derived tumours or other disruptions in the dopamine metabolic pathway.
- Test Code
- 843
- CPT Code
- 84100
- ICD Code
- E27.5
- Price
- ₹5,500
- Sample Type
- 24-hour urine
- Result Time
- Samples collected on Wednesday or Saturday by 9:00 AM. Reports available on the following Friday or Tuesday respectively. Results are delivered via the online portal, email, or WhatsApp.
- Fasting Required
- No
- Method
- HPLC-EC (High-Performance Liquid Chromatography with Electrochemical Detection)
Sample Collection
Patient must strictly avoid L-Dopa and Levodopa/Carbidopa medications for at least 72 hours before starting the 24-hour urine collection. Inform the physician about all current medications, including antidepressants and MAO inhibitors. No other specific fasting is required, but dietary advice from the physician should be followed.
Method: 24-hour urine collection with acid preservation
Laboratory Analysis
Begin the 24-hour urine collection as instructed by the laboratory. Discard the first morning urine on day one, then collect all subsequent urine for the next 24 hours, including the first morning urine on day two. Add 50% hydrochloric acid (HCl) drop by drop to the collection container to bring the urine pH between 1 and 2. Do not use concentrated HCl. Keep the container refrigerated or on ice during collection.
Report Delivery
After completing the 24-hour collection, mix the urine well and transfer a 50 mL aliquot (minimum 10 mL) to the provided transport container. Ensure the sample is clearly labelled with patient name, date, and total urine volume. Ship the sample refrigerated or frozen to the laboratory. The home collection team from DNA Labs India will handle pick-up and transport for online bookings.
Timeline: Samples collected on Wednesday or Saturday by 9:00 AM. Reports available on the following Friday or Tuesday respectively. Results are delivered via the online portal, email, or WhatsApp.
Patient Instructions
About This Test
Who Should Get This Test
The HVA 24-Hour Urine Test is used to screen for catecholamine-secreting tumours such as neuroblastoma and pheochromocytoma, to monitor treatment response in patients with neuroblastoma, and to evaluate patients with suspected inborn errors of catecholamine metabolism. Elevated urinary HVA levels indicate increased dopamine turnover, which may be associated with neural crest-derived tumours or other disruptions in the dopamine metabolic pathway.
How to Prepare
- Use a clean, sterile 24-hour urine collection container provided by the laboratory
- Discard the first voided morning urine on day one; begin collecting from the next void
- Collect all urine passed over the next 24 hours into the container
- Include the first morning void on day two as the final specimen
- Add 50% HCl drop by drop to the container to bring urine pH between 1 and 2
- Never use concentrated hydrochloric acid for preservation
- Keep the collection container refrigerated or on ice throughout the collection period
- Record the total volume of urine collected over 24 hours
- Transfer a 50 mL aliquot (minimum 10 mL) to the transport vial
- Strictly avoid L-Dopa and Levodopa medications for 72 hours before and during collection
- Submit the sample to the laboratory or hand it to the home collection agent as scheduled
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"Urinary homovanillic acid is one of the most reliable biochemical markers for the diagnosis and surveillance of neuroblastoma, the most common extracranial solid malignancy in children. Serial HVA measurements during chemotherapy help oncologists assess treatment response and detect early relapse. When combined with vanillylmandelic acid (VMA) testing, diagnostic sensitivity for catecholamine-secreting tumours improves significantly. Elevated HVA may also guide the workup of pheochromocytoma and other neural crest-derived neoplasms. Clinicians should always correlate HVA results with imaging findings, clinical presentation, and histopathological confirmation before initiating treatment."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Urine sample not preserved with 50% HCl or pH not maintained between 1 and 2
- Use of concentrated hydrochloric acid for sample preservation
- Patient took L-Dopa or Levodopa within 72 hours before or during urine collection
- Incomplete 24-hour urine collection (missing significant portions of urine)
- Sample not refrigerated or frozen during transport and arrived at room temperature beyond 8 hours
- Unlabelled or mislabelled sample container
- Insufficient sample volume (less than 10 mL aliquot)
Understanding Your Results
HVA levels are within the expected range for the patient's age. This suggests normal dopamine metabolism. However, a normal result does not completely exclude the presence of a catecholamine-secreting tumour, particularly if clinical suspicion remains high.
Status: Normal
Range: Within normal reference range
Slightly elevated HVA levels may be seen in conditions such as early-stage neuroblastoma, stress, medication effects (MAO inhibitors, L-Dopa withdrawal), or dietary factors. Repeat testing and correlation with other catecholamine metabolites (VMA, catecholamines) and imaging studies are recommended.
Status: Borderline
Range: Mildly elevated
Markedly elevated HVA levels are strongly suggestive of catecholamine-secreting tumours such as neuroblastoma, pheochromocytoma, ganglioneuroblastoma, or other neural crest tumours. In patients under treatment for neuroblastoma, persistently elevated or rising HVA may indicate incomplete treatment response or disease recurrence. Urgent clinical correlation with imaging and specialist consultation is warranted.
Status: Abnormal – High
Range: Significantly elevated
Low urinary HVA levels may be observed in patients with Parkinson's disease or other conditions associated with reduced dopamine synthesis. Clinical correlation with neurological evaluation and other diagnostic tests is advised.
Status: Abnormal – Low
Range: Below normal reference range
Consult your healthcare provider if you experience persistent tremors, unexplained muscle stiffness, movement difficulties, unexplained hypertension with episodes of palpitations and sweating, a palpable abdominal mass (especially in children), or if your test results show abnormally elevated or decreased HVA levels. Timely consultation with an oncologist or neurologist is essential for further evaluation and management.
Limitations
- ⚠HVA levels alone are not diagnostic; results must be interpreted alongside clinical findings, imaging studies, and other laboratory tests
- ⚠Single HVA measurements may not distinguish between different catecholamine-secreting tumour types
- ⚠Certain medications and dietary factors can influence dopamine metabolism and affect results
- ⚠Reference ranges may vary between laboratories; serial monitoring using the same laboratory is recommended for treatment follow-up
- ⚠This test does not replace histopathological confirmation of tumour diagnosis
Risks & Considerations
- ●The 24-hour urine collection procedure is non-invasive and carries no direct health risks
- ●Inaccurate results may occur if instructions for L-Dopa avoidance or sample preservation are not followed
- ●Skin irritation may occur if undiluted HCl comes in direct contact with skin during sample preservation; handle with care
- ●Incomplete urine collection may necessitate repeat testing
Interfering Factors
- ●Use of L-Dopa or Levodopa/Carbidopa medications within 72 hours of or during urine collection
- ●Monoamine oxidase (MAO) inhibitors and certain antidepressants
- ●Foods rich in dopamine precursors such as bananas, avocados, and walnuts (may have minor influence)
- ●Use of concentrated hydrochloric acid instead of 50% HCl for sample preservation
- ●Incomplete 24-hour urine collection leading to falsely low values
- ●Extreme physical or emotional stress during the collection period
Compare With Similar Tests
| Test | Homovanillic Acid (HVA) 24 Hour Urine Test | Vanillylmandelic Acid (VMA) 24-Hour Urine Test | Catecholamines 24-Hour Urine Test | Urinary Metanephrines Test | Neuron-Specific Enolase (NSE) Serum Test |
|---|---|---|---|---|---|
| Comparison | Homovanillic Acid (HVA) 24 Hour Urine Test | VMA is a metabolite of norepinephrine and epinephrine, whereas HVA is a metabolite of dopamine. Both tests are used together for catecholamine-secreting tumour screening; combined measurement improves diagnostic sensitivity for neuroblastoma and pheochromocytoma. VMA is more commonly elevated in pheochromocytoma, while HVA is particularly sensitive for neuroblastoma. | The catecholamines test measures the parent hormones (dopamine, norepinephrine, epinephrine) directly, while the HVA test measures the metabolite of dopamine. Catecholamines reflect acute secretion, whereas HVA provides an integrated measure of dopamine turnover over 24 hours. Both tests complement each other in tumour diagnosis. | Urinary metanephrines (metanephrine and normetanephrine) are metabolites of epinephrine and norepinephrine, and are the preferred screening test for pheochromocytoma and paraganglioma. The HVA test is more relevant for neuroblastoma screening and monitoring. Your physician may order both tests depending on the clinical scenario. | NSE is a serum tumour marker used alongside HVA for neuroblastoma evaluation. While HVA reflects dopamine metabolism from the tumour, NSE is a general marker of neuronal damage and tumour burden. Combined use of HVA and NSE provides complementary information for diagnosis, prognosis, and treatment monitoring in neuroblastoma. |
Frequently Asked Questions
What is the Homovanillic Acid (HVA) 24-Hour Urine Test?
Why would a doctor recommend the HVA 24-Hour Urine Test?
How should I prepare for the HVA 24-Hour Urine Test?
Why must I avoid L-Dopa before the HVA test?
How do I collect a 24-hour urine sample for the HVA test?
What is the normal range for HVA in a 24-hour urine sample?
What does an elevated HVA level indicate?
Can children undergo the HVA 24-Hour Urine Test?
How long does it take to receive the HVA test results?
What is the cost of the HVA 24-Hour Urine Test at DNA Labs India?
Is home sample collection available for the HVA 24-Hour Urine Test?
What is the difference between the HVA test and the VMA test?
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