Enzymatic, Freezing point depression, Photometric, End point assay, Molybdic acid, pH meter, Uricase, Kinetic UV
3 - 7 days
1. Collect urine for 24 hours.
2. Add 5 mL of diazolidinyl urea as preservative at start of collection, or refrigerate specimen during and after collection.
3. Specimen pH should be between 4.5 and 8 and will stay in this range if kept refrigerated. Specimens with pH >8 indicate bacterial contamination, and testing will be cancelled. Do not attempt to adjust pH as it will adversely affect results.
Test performed by Mayo Clinic Laboratories