Creatine Biosynthesis Disorders Panel, Urine
Test code
CPT code(s)*
Clinical significance
Test resources
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Details
Includes
Guanidinoacetate, Creatine, Creatinine, Creatine/Creatinine
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Assay category
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.
Alternative name(s)
Creatine Disorders
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1 mL random urine collected in a sterile cup or tube (including catheter submissions) |
| Alternative specimen(s) | 24-hour urine |
| Minimum volume | 0.15 mL |
| Collection instructions | Collect a random urine specimen. Immediately freeze specimen. Correct specimen collection and handling is crucial to achieve reliable results. |
| Transport container | Sterile plastic urine container |
| Transport temperature | Frozen |
| Specimen stability | Room temperature: Unacceptable Refrigerated: Unacceptable Frozen: 28 days |
| Reject criteria | Specimens not frozen immediately after collection |
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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