25 %

Homovanillic Acid (hva), 24 Hour Urine

194 Ratings

Rs 4,000 Rs 5,360

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50 mL (10 mL min.) aliquot of 24-hour Urine. Add 50% HCl drop by drop to bring the pH between 1–2. Do not use concentrated HCl. Ship refrigerated or frozen. Patient should strictly avoid L-Dopa at least 72 hours before and during collection.

HPLC-EC

3 days

Patient should strictly avoid L-Dopa at least 72 hours before and during collection.

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