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Test ID: Uric Acid 24 Hour Urine
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Uric Acid 24 Hour Urine
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Useful For
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Diagnosis and treatment of numerous renal and metabolic disorders.
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Method name and description
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Enzymatic colorimetric test.
Uricase cleaves uric acid to form allantoin and hydrogen peroxide. The color intensity of the quinone‑diimine formed is directly proportional to the uric acid concentration and is determined by measuring the increase in absorbance.
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Clinical information
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Uric acid is the final product of purine metabolism in the human organism. Uric acid measurements are used in the diagnosis and treatment of numerous renal and metabolic disorders, including renal failure, gout, leukemia, psoriasis, starvation or other wasting conditions, and of patients receiving cytotoxic drugs.
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Specimen type / Specimen volume / Specimen container
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Specimen type: 24- hour Urine (random specimen is not applicable)
Specimen Container: 24-hour urine container
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Collection instructions / Special Precautions / Timing of collection
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Refer to Specimen Management Procedures
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Storage and transport instructions
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Storage: 4 days at 20 – 25°C
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Specimen Rejection Criteria
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Leaking specimen, contaminated sample, adulterated sample.
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Biological reference intervals and clinical decision values
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Factors affecting test performance and result interpretation
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Calcium dobesilate, Levodopa and methyldopa can all cause artificially low uric acid results. High homogentisic acid concentrations in urine samples lead to false results. Dicynone (Etamsylate) at therapeutic concentrations may lead to false‑low results.
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Turnaround time / Days and times test performed / Specimen retention time
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Daily (24/7)
Turn-around time:
Routine: One working day
Specimen Retention: 4 days
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