Test ID: CRDPU
Creatine Disorders Panel, Urine
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
Useful For Suggests clinical disorders or settings where the test may be helpful
Evaluation of patients with a clinical suspicion of inborn errors of creatine metabolism including arginine:glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency, and creatine transporter (CrT1) defect
Genetics Test Information Provides information that may help with selection of the correct test or proper submission of the test request
Evaluation of patients with a clinical suspicion of inborn errors of creatine metabolism including argine:glycine amidinotransferase deficiency (AGAT), guanidinoacetate methyltransferase deficiency (GAMT), and CrT1 defect. Correct specimen collection and handling is crucial to achieve reliable results. Creatine supplementation will cause falsely elevated results.
Additional Tests Lists test(s) that are always performed, at an additional charge, with the initial test(s)
| Test ID | Test Number | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|---|
| 23466 | 23466 | Creatine, (Bill Only), U | No | Yes |
| 23467 | 23467 | Creatinine, (Bill Only), U | No | Yes |
| 23468 | 23468 | Guanidinoacetate, (Bill Only), U | No | Yes |
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
CRDPU/88697 Creatine Disorders Panel, Urine is a single test that carries the results for the panel. When the test is resulted, the following procedures are billed:
23466 Creatine, (Bill Only), Urine
23467 Creatinine, (Bill Only), Urine
23468 Guanidinoacetate, (Bill Only), Urine
Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test
Method Name A short description of the method used to perform the test
Liquid Chromatography-Tandem Mass Spectometry (LC-MS/MS)
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Aliases Lists additional common names for a test, as an aid in searching
Arginine:Glycine Amidinotransferase Deficiency (AGAT)
CrT1 defect
GAMT (Guanidinoacetate Methyltransferase) Deficiency
Guanidinoacetate Methyltransferase (GAMT) Deficiency
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