Creatine and Guanidinoacetate Determination Plasma

Test Code

13601L

CPT Codes
82540, 82542

Includes

Creatine, Guanidinoacetate, Interpretation

Preferred Specimen

2 mL plasma collected in a sodium heparin (green-top) tube

Minimum Volume

1 mL

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 7 days

Methodology
Tandem Mass Spectroscopy

FDA Status
This test was developed and its performance characteristics have been determined by Baylor Miraca Genetics Laboratories DBA Baylor Genetics (CAP# 2109314/ CLIA# 45D0660090; Lab Director: Christine M. Eng, MD). It has not been cleared or approved by the FDA. The laboratory is regulated under CLIA as qualified to perform high-complexity testing. This test is used for clinical purposes. It should not be regarded as investigational or for research.

Setup Schedule

Set up: Mon-Fri; Report available: 10 days

Clinical Significance

This test provides quantitative analysis of Creatine and Guanidinoacetate in plasma.

This test is useful for the evaluation of patients suspected of having disorders of Creatine Transport and Synthesis, e.g. GAMT and AGAT Dificiency.

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.