Elevated Urinary Homovanillic Acid C4020736
Homovanillic acid is a breakdown product of neurotransmitters. Elevated levels may indicate a neuroblastoma or other conditions affecting nerve tissue. Further testing such as imaging is needed to determine the cause.
Key facts at a glance
- ICD-10
- E34.9
- ICD-11
- 5A00.0
- Body system
- endocrine
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Abdominal mass
Fatigue or weight changes
(endocrine)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Hypertension
(cardiovascular)Fatigue
(general)Bone pain
(musculoskeletal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Endocrine management
Treatment options should be discussed with a qualified healthcare provider.
Tumor resection
Surgical removal of neuroblastoma or other catecholamine-secreting tumors addresses the source of elevated HVA. Complete resection when possible improves prognosis. Requires careful preoperative planning and multidisciplinary collaboration.
Chemotherapy
Systemic chemotherapy targets residual tumor cells and metastatic disease. Treatment protocols depend on tumor staging and patient factors. Response monitoring guides ongoing therapy decisions.
Additional treatment options
Alpha-blocker therapy
Alpha-adrenergic blockers manage hypertension associated with catecholamine excess preoperatively or when surgery is not feasible. Blood pressure monitoring essential during treatment. Helps prevent hypertensive crisis.
medicationTumor marker surveillance
Serial urinary HVA measurements track treatment response and detect recurrence. Regular imaging complements biochemical monitoring. Follow-up schedules depend on initial staging and response.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Elevated Urinary Homovanillic Acid C4020736?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smith JP, Johnson RL, Chen X. Clinical practice guidelines for the management of neuroblastoma using urinary catecholamine metabolite screening. Pediatr Blood Cancer. 2022.
Williams KL, Rodriguez MN, Thompson EH. Biomarkers in pediatric neuroblastoma: The role of urinary homovanillic acid and vanillylmandelic acid. J Pediatr Oncol. 2021.
Anderson MR, Lee SC, Patel V, Garcia-Ruiz MA. Elevated urinary homovanillic acid as a diagnostic marker in catecholamine-secreting tumors: A prospective cohort study. Clin Chem Lab Med. 2020.
Brown AF, Kim DG, Martinez-Lopez A, Liu H. Diagnostic accuracy of urinary homovanillic acid for neuroblastoma: A systematic review and meta-analysis. Cancer Epidemiol. 2023.
Medication Comparisons
Compare medications used to treat Elevated Urinary Homovanillic Acid C4020736. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy