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Test Code CRE24 Creatinine, 24 Hour, Urine

Methodology

Two-point Rate

Urine creatinine, in conjunction with serum creatinine, is used to calculate the creatinine clearance (a measure of renal function).

Specimen Requirements

Container/Tube: Plastic urine container

Specimen Volume: 10 mL from a well-mixed, 24-hour urine collection

Collection Instructions: No preservative. Refrigerate specimen during collection.

Note: 1. Starting and ending times of collection and total volume are required.

2. Follow instructions in “Urine Collection, 24-Hour” in Special Instructions.

Day(s) Test Set Up

Monday through Sunday

Reference Values

800-2,800 mg/24 hours

Performing Laboratory

Logan Health Medical Center-Chemistry

Test Classification and CPT Coding

82570

Specimen Transport Temperature

Refrigerate

Special Instructions