Protein, Total, with Creatinine, 24-Hour Urine

Test Code

757

CPT Codes
82570, 84156

Includes

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

Preferred Specimen

10 mL of a well-mixed unpreserved 24-hour urine, submitted in a plastic leak-proof urine container

Minimum Volume

2 mL

Other Acceptable Specimens

24-hour unpreserved urine, submitted in Urinalysis Transport Tube (yellow-top, blue fill line, preservative) tube

Instructions

Please submit 10 mL aliquot from a well-mixed 24-hour urine, no preservative. 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

Set up: Sun-Fri; Report available: 1-3 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.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

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.