Plasma Creatine/Guanidinoacetate Analysis
Test code
CPT code(s)*
Clinical significance
Test resources
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Details
Includes
Creatine, Guanidinoacetate, Interpretation
Methodology
Liquid Chromatography-Tandem Mass Spectometry (HPLC-MS/MS)
Assay category
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.
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1 mL plasma collected in a sodium heparin (green-top) tube |
| Collection instructions | Draw blood in sodium Heparin (green-top) tube(s) and separate as soon as possible. Send 1-2 cc of plasma. Store the specimen frozen at -20° C. Specimen may be stored frozen for up to 7 days. |
| Transport container | Transport tube |
| Transport temperature | Frozen |
| Specimen stability | Room temperature: Not acceptable Refrigerated: Not acceptable |
| Reject criteria | Received room temperature • Received refrigerated |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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