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CREA
CREATININE, SERUM (WITH EGFR/GFR)

Test Code CREA 
Test CREATININE, SERUM (with EGFR/GFR) 
Methodology Enzymatic, colorimetric 
Description Useful for the evaluation of renal function.
The eGFR/GFR, Glomerular Filtration Rate (estimated or calculated), is reported along with the Creatinine result.

NOTE: The recent use of acetaminophen or N-acetyl-cysteine may interfere directly or via metabolites (N-acetyl-p-benzoquinone imine) with the Trinder methodology used to perform this test resulting in falsely decreased results on any type of specimen. 

Specimen Draw blood in either a plain, red-top tube or serum gel tube. Spin down and send 1.0 mL (0.3 mL minimum) of serum refrigerated. 
MMC Specimen Draw blood in a plasma gel tube. 1.0 mL (0.3 mL minimum) of plasma required. 
Reference Values 0.5 - 1.3 mg/dL

NOTE: Dobutamine, Levodopa and Calcium dobesilate (e.g. Dexium) cause artificially low creatinine results at the therapeutic drug level. 

Analytic Time 1 Day - Available STAT 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 82565  

Special Instructions