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To assist in diagnosis of neuroblastoma, pheochromocytoma, and ganglioblastoma and to monitor therapy.
Urine from a timed specimen collected in a clean plastic collection container with 6N HCl as a preservative.
|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|