Test Code 81250 Creatinine (Urine)
Purpose
Calculation of creatinine clearance, a measure of renal function, when used in conjunction with serum creatinine.
Performing Laboratory
Copley Hospital
Methodology
Bichromatic Rate
Specimen Requirements
Specimen Type: Urine (24 Hour Collection)
Container/Tube: Sterile Plastic Container
Specimen Volume: Entire 24 Hour Collection
Collection Instructions:
1. Label specimen with patient’s full name, date of birth, and
date & time of collection (Both Start & End Times).
2. For 24 Hour Urines: Refrigerate during collection
and follow instructions for “24 Hour Urine Collection”
under “Specimen Collection and Handling” within the
links menu on the left side of the screen.)
3. Refrigerate specimen during transport.
Reference Values
Normal: 1.0 - 2.0 g / 24 Hours
Stability
Refrigerated: 2 Days
Day(s) Performed
Daily
Analytical Time: 1 Day
Aliases
Creatinine (Urine)
Creatinine
Urine
24 Hour Urine
Test Classification & CPT Coding
81050 - Urine Timed Measurement
82570 - Creatinine