Creatine, Serum

Test Code

37091

CPT Codes
82540

Preferred Specimen

2 mL frozen serum

Minimum Volume

1 mL

Instructions

Centrifuge and transfer serum specimen to a clean, plastic screw-cap vial. Freeze and ship frozen.

Transport Temperature

Frozen

Specimen Stability

Room temperature: 4 hours
Refrigerated: 24 hours
Frozen: 30 days

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

Hemolysis

Methodology
Enzymatic

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

P.M. Sets up 5 days a week.

Clinical Significance

Creatine, produced by the liver, is essential for metabolism of the brain and muscles. Creatine is converted to creatinine and excreted.

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.