Specimen Requirements
Title
Sulfate, Quantitative, 24 Hour Urine
Specimen Requirement
At the start of the 24 hour collection, discard first morning urine, from that time collect all urine for 24 hours. Record total volume of urine, mix well, then aliquot 10 mL to a screw top container. Indicate total volume of 24 hour urine on aliquot and requisition.
Total volume must be recorded for testing.
Methodology
Spectrophotometry
Stability
Room temp: 14 days, Refrigerated: 14 days, Frozen: 14 days
Reference Range
Reference ranges are determined by the performing laboratory and will show on the report.
Turnaround
Clinical Use
The determination of sulfate in urine is of interest in sulfur metabolism studies. The urinary sulfate is mainly derived from sulfur-containing amino acids and is therefore determined by protein intake. This assay is also useful as part of a kidney stone risk profile.
Test Code
24SUL