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Test Code 0211045 Urea Nitrogen and Creatinine Kinetics, 24 Hour, Peritoneal Dialysate and Urine


Colorimetric Reflectance Spectrophotometry (SP)

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Peritoneal dialysate and urine are required.


Specimen Type: Peritoneal dialysate, 24 hour

Container/Tube: Plastic container or 10-mL, plain, red-top tube

Specimen Volume: Entire collection

Collection Instructions: Label specimen appropriately (peritoneal dialysate).


Specimen Type: Urine, 24 hour

Container/Tube: Plastic urine container

Specimen Volume: Entire collection

Collection Instructions:

1. No preservative.

2. Label specimen appropriately (urine).

Additional Information: Follow instructions in Urine Collection in Special Instructions for timed specimens.

Specimen Transport Temperature


Reference Values

Not applicable

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82570 x 2-Creatinine


84520-Urea nitrogen, quantitative

84540-Urea nitrogen, urine

Special Instructions