Sulfate, Quantitative, 24-Hour Urine

CPT: 84392
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Test Details

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.

Limitations

This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

Methodology

Spectrophotometry

Reference Interval

0−30 mEq/24 hours

Specimen Requirements

Specimen

Urine (24-hour)

Volume

10 mL aliquot

Minimum Volume

0.5 mL aliquot

Container

Plastic urine container, no preservative

Collection

Measure total volume and record. Mix well.

Storage Instructions

Refrigerate

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3

Clinical Information

Special Instructions

Record total 24-hour urine volume on the request form.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
123307 Sulfate, Quant, 24-Hour Urine 121304 Sulfate, Ur, mEq/L mEq/L 26888-8
123307 Sulfate, Quant, 24-Hour Urine 121303 Sulfate,Ur,mEq/24hr mEq/24 hr 26889-6

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