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Creatine Disorders Panel, Serum or Plasma
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Ordering Recommendation
Initial test to diagnose or rule out creatine deficiency syndromes following clinical presentation. Order Creatine Disorders Panel, Urine (2002333), simultaneously for proper result interpretation.
Mnemonic
Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Performed
Mon
Reported
2-9 days
New York DOH Approval Status
Specimen Required
Green (Sodium or Lithium Heparin), Lavender (K2EDTA), Plain Red, or Serum Separator Tube (SST).
Separate from cells within 6 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.2 mL)
Frozen.
Clinical information is needed for appropriate interpretation. Additional required information includes age, gender, diet (e.g., TPN therapy), drug therapy, and family history. Biochemical Genetics Patient History Form is available on the ARUP Web site at https://www.aruplab.com/patienthistory or by contacting ARUP Client Services.
Ambient: 6 hours; Refrigerated: 1 week; Frozen: 6 months (Three freeze/thaw cycles are acceptable.)
Reference Interval
Refer to Report
Interpretive Data
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
82540; 82542
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 2002330 | Guanidinoacetic acid, Serum/Plasma | 33244-5 |
| 2002331 | Creatine, Serum/Plasma | 15045-8 |
| 2002332 | Creatine Disorder Serum/Plasma Interp |
Aliases
- AGAT
- Creatine, Plasma
- Creatinine, plasma
- GAA & Creatine
- GAA + Creatine
- GAMT
- Guanidinoacetic Acid and Creatine
- Guanidinoacetic Acid + Creatine
- Guanidinoacetic acid, plasma
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