Creatinine

Test Code

CRE

Includes

Creatinine

Preferred Specimen

1 mL serum

Minimum Volume

0.5 mL

Other Acceptable Specimens

Heparinized plasma

Transport Container

Serum separator tube (SST)

Transport Temperature

Ambient

Specimen Stability

Ambient: 7 days
Refrigerated: 7 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Grossly icteric • Anticoagulants other than heparin

Methodology
Spectrophotometry (SP)

Setup Schedule

24/7

Report Available

Same day

Reference Range

0.4-1.6 mg/dL

Clinical Significance

Serum creatinine is useful in the evaluation of kidney function and in monitoring renal dialysis. A serum creatinine result within the reference range does not rule out renal function impairment: serum creatinine is not sensitive to early renal damage since it varies with age, gender and ethnic background. The impact of these variables can be reduced by an estimation of the glomerular filtration rate using an equation that includes serum creatinine, age and gender.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.