Homovanillic Acid and Vanillylmandelic Acid
is a topic covered in the Davis's Lab & Diagnostic Tests
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There are no food, fluid, or activity restrictions unless by medical direction. If possible, and with medical direction, patients should withhold acetylsalicylic acid, disulfiram, pyridoxine, and reserpine for 2 days before specimen collection. Levodopa should be withheld for 2 wk before specimen collection. The test should begin between 0600 and 0800 if possible. Usually, a 24-hr urine collection is ordered. As appropriate, provide the required urine collection container and specimen collection instructions.
|Age||Conventional Units||SI Units|
|Homovanillic Acid||(Conventional Units × 5.49)|
| 3–6 yr||1.4–4.3 mg/24 hr||8–24 micromol/24 hr|
| 7–10 yr||2.1–4.7 mg/24 hr||12–26 micromol/24 hr|
| 11–16 yr||2.4–8.7 mg/24 hr||13–48 micromol/24 hr|
| Adult–older adult||1.4–8.8 mg/24 hr||8–48 micromol/24 hr|
|Vanillylmandelic Acid||(Conventional Units × 5.05)|
| 3–6 yr||1–2.6 mg/24 hr||5–13 micromol/24 hr|
| 7–10 yr||2–3.2 mg/24 hr||10–16 micromol/24 hr|
| 11–16 yr||2.3–5.2 mg/24 hr||12–26 micromol/24 hr|
| Adult–older adult||1.4–6.5 mg/24 hr||7–33 micromol/24 hr|
Critical Findings and Potential Interventions
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Bladh, Mickey Lynn., and Anne M. Van Leeuwen. "Homovanillic Acid and Vanillylmandelic Acid." Davis's Lab & Diagnostic Tests, 7th ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425473/all/Homovanillic_Acid_and_Vanillylmandelic_Acid.
Bladh ML, Van Leeuwen AM. Homovanillic Acid and Vanillylmandelic Acid. Davis's Lab & Diagnostic Tests. 7th ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425473/all/Homovanillic_Acid_and_Vanillylmandelic_Acid. Accessed December 12, 2019.
Bladh, M. L., & Van Leeuwen, A. M. (2017). Homovanillic Acid and Vanillylmandelic Acid. In Davis's Lab & Diagnostic Tests. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425473/all/Homovanillic_Acid_and_Vanillylmandelic_Acid
Bladh ML, Van Leeuwen AM. Homovanillic Acid and Vanillylmandelic Acid [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2017. [cited 2019 December 12]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425473/all/Homovanillic_Acid_and_Vanillylmandelic_Acid.
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T1 - Homovanillic Acid and Vanillylmandelic Acid
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