Synonym(s):
24 hr urine specimen in 15 mL 50% HCl or random urine.
Minimum aliquot volume : 30 mL urine
Total 24 hr urine volume must be clearly indicated
High Performance Liquid Chromatography
0 – 1 yr : < 20.2 µmol/mmol creatinine
2 – 4 yrs : < 13.6 µmol/mmol creatinine
5 – 9 yrs : < 9.4 µmol/mmol creatinine
10 – 19 yrs : < 7.9 µmol/mmol creatinine
≥ 20 yrs : < 45.6 µmol/day
Mean = 7 days, Range: 3 - 11 days
Monday – Friday
Patient Preparation:
(1) Patient Should abstain from the following at least 3 days prior to and during urine specimen collection:
(a) where medically possible, drugs containing phenotiazines which may potentially interfere with the testing.
(2) If the patient cannot be completely removed from a drug regime, test result should be interpreted with appropriate clinical judgement based on expected physiology response to these drugs.
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