Synonym(s):
24 hr urine in 15 mL 50% HCl Minimum aliquot volume : 30 mL urine
High Performance Liquid Chromatography
0 – 1 yr : < 10.7 µmol/mmol creatinine 2 – 4 yrs : < 6.3 µmol/mmol creatinine 5 – 9 yrs : < 4.7 µmol/mmol creatinine 10 – 19 yrs : < 4.7 µmol/mmol creatinine ≥ 20 yrs : 0 - 34.3 µmol/day
Mean = 7 days, Range: 3 – 11 days
Monday – Friday
Instructions before sampling:
Patients should abstain from the following at least 3 days prior to and during urine specimen collection: - intake of food like chocolates, coffee, tea, citrus fruits, and food containing vanilla and - Where medically allowable, drugs such as aspirin, drugs containing gentisic and homogentisic acid, antihypertensive drugs, methyldopa, glyceryl trinitrate, chlorpromazine, L-Dopa, epinephrine, norepinephrine, prochlorperazine, reserpine, disulfiram, guanethidine, imipramine, MAO inhibitors, radiographic dyes (for IV pyelography) Total 24-hour urine volume must be clearly indicated.
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