Protein Urine with Creatinine Ratio

Test Overview

Test Methodology

Colorimetric (Pyrogallol Red)

Test Usage

To aid in the diagnosis of proteinuria, evaluate renal function.

Reference Range*

0 - 0.15 g/24 hrs (0-150 mg/24 hrs). Random urine protein/creatinine ratio: 0.01 - 0.18.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details

Days Test Performed

Daily, 24 hours

Analytic Time

8 hours

Soft Order Code

PROTU

MiChart Code

Protein, Urine

Laboratory

Chemical Pathology

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Specimen Requirements

Offsite Collection Instructions

Collect 24 hour urine specimen with no preservative. Aliquot 5 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable, in which case a protein/creatinine ratio will be reported.

Rejection Criteria

Specimens collected with Acid Preservative are not acceptable. Diapers, sections of diapers, swabs or any other absorbent material will not be accepted as a collection container for urine. Urine collected in acid preservative is unacceptable.

Normal Volume

5 mL aliquot of 24 hour urine collection or 2 mL aliquot of random urine collection.

Minimum Volume

2 mL aliquot of 24 hour urine collection or 1 mL aliquot of random urine collection.

Additional Information

For random urine specimens, a Urine Creatinine will also be performed at no additional charge.