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Test Code LAB743 Protein/Creatinine Ratio, Urine

Reporting Title

Protein/Creatinine Ratio

Methodology

Roche Diagnostics- RMH, GMC, DH, DMH, BH, OBH, MGH 

Note:  Protein/creatinine ratio on a random urine specimen provides evidence to “rule-out” presence of significant proteinuria without having to collect a 24-hour urine sample.

Performing Laboratory

OhioHealth Laboratory Services-RMH, GMC, DH, DMH, MGH, GMH,OBH, MH, BH Core Laboratories

Specimen Requirements

Minimum of 10.0 mL of urine from a random urine collection in a 10 mL BD yellow-top round bottom urine tube or a screw-capped, sterile, plastic urine container. No preservative.

DO NOT SEND THE BLUE CAPPED INTEGRATED TRANSFER DEVISE COLLECTION CONTAINER. THEY OFTEN LEAK AND HAVE A METAL NEEDLE ATTACHED WHICH PRESENTS A SAFETY ISSUE.

Note:  Follow instructions in “Urine Collection” in “Special Instructions.”

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated 7 days
  Ambient  1 day
  Frozen  1 month

 

Specimen Transport Temperature

Ambient/Refrigerate OK/Frozen OK

Reference Values

Protein/creatinine ratio is expressed in mg/dL for both protein and creatinine.

A ratio of </= 0.2 implies normal protein excretion.

Day(s) Test Set Up

Monday through Sunday; Continuously

Test Classification and CPT Coding

82570 - creatinine

84156 - protein, urine

Special Instructions