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Test Code CREA Creatinine, Plasma or Serum

Additional Codes

EPIC:  LAB66

Methodology

Enzymatic (Isotope Dilution Mass Spectrometry (IDMS) Traceable Creatinine Standardization)

Used in the diagnosis and treatment of renal diseases, in monitoring renal dialysis, and as a calculation basis for measuring other urine analytes.

Performing Laboratory

St. Joseph Hospital

Specimen Requirements

Submit only 1 of the following specimens:

Preferred:  Plasma
Draw blood in a light green-top (lithium heparin gel) tube(s). Spin down, separate plasma from cells within 2 hours of draw, and send 1 mL of lithium heparin plasma refrigerated.

Note:  1. Indicate plasma on request form.

2. Label specimen appropriately (plasma).

 

Alternate:  Serum

Draw blood in a plain, red-top tube(s) or a serum gel tube(s). Spin down, separate serum from cells within 2 hours of draw, and send 1 mL of serum refrigerated.

Note:  1. Indicate serum on request form.

2. Label specimen appropriately (serum).

Reference Values

Males:  0.67 - 1.17 mg/dL

Females:  0.51 - 0.95 mg/dL

Critical value:  > 4.0 mg/dL (males and females; outpatients only)

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

82565