Protein, Total, with Creatinine, 24-Hour Urine

Test Code

757

Includes

CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen

24 Hour Urine Container

Minimum Volume

2 mL

Instructions

Record 24-hour urine volume on test request form and urine vial

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 4 days
Refrigerated: 5 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Acidified urine

Methodology
Colorimetric (C) • Spectrophotometry (SP)

Setup Schedule

Night Sets up 6 days a week.

Report Available

Reports in 2 to 3 days.

Reference Range

Protein, Total, 24 Hr Ur

<150 mg/24 h

Protein/Creatinine Ratio

Male	<100 mg/g creat
Female	<150 mg/g creat

Protein/Creatinine Ratio

Male	<0.100 mg/mg creat
Female	<0.150 mg/mg creat

Creatinine, 24-Hour Urine

<3 Years	Not established
3-8 Years	0.10-0.80 g/24 h
9-12 Years	0.20-1.40 g/24 h
13-17 Years	0.40-1.90 g/24 h
>17 Years	0.50-2.15 g/24 h

Clinical Significance

Urinary total proteins are negligible in healthy individuals. Concentrations are increased in patients with a wide variety of disease that impair renal function including diabetes, hypertension, nephritic syndrome, and drug nephrotoxicity.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.