Protein and Creatinine, Random Urine

CPT: 82570; 84156
Print Share

Test Includes

Creatinine; protein, total; protein:creatinine ratio


Expected Turnaround Time

Within 1 day


Related Documents


Specimen Requirements


Specimen

Urine (random)


Volume

50 mL


Minimum Volume

1 mL (Note: This volume does not allow for repeat testing.)


Container

Plastic urine container, no preservative


Collection

Collect random urine in a clean plastic container. Label the urine container with the patient's full name and the date and time of collection.


Storage Instructions

Room temperature


Stability Requirements

Temperature

Period

Room temperature

7 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3


Test Details


Use

Protein:creatinine ratio in a first-morning or random untimed "spot" urine specimen is recommended testing to ascertain chronic kidney disease.1 It is also used to evaluate nephrotic syndromes; work up other renal diseases, including malignant hypertension, glomerulonephritis, Goodpasture syndrome, cryoglobulinemia, toxemia of pregnancy, drug nephrotoxicity, and renal tubular lesions; manage myeloma and macroglobulinemia of Waldenström (Bence Jones proteinuria); evaluate hypoproteinemia; tubular proteinurias, including Wilson's disease and Fanconi syndrome. Albumin/Creatinine Ratio, Random Urine is a more sensitive marker of progression and regression of renal disease than urine total protein, especially when urine total protein is <300 mg/g creatinine.


Methodology

Spectrophotometric


Footnotes

1. Kidney Disease Outcomes Quality Initiative (K/DOQI). K/DOQI clinical practice guidelines on hypertension and antihypertensive agents in chronic kidney disease.Am J Kidney Dis. 2004 May; 43(5 Suppl 1):S1-290. 15114537

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
003129 Prot+CreatU (Random) 87434-7 013672 Creatinine, Urine mg/dL 2161-8
003129 Prot+CreatU (Random) 87434-7 013664 Protein,Total,Urine mg/dL 2888-6
003129 Prot+CreatU (Random) 87434-7 100203 Protein/Creat Ratio mg/g creat 2890-2

For Providers

Please login to order a test

Order a Test

© 2021 Laboratory Corporation of America® Holdings and Lexi-Comp Inc. All Rights Reserved.

CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf