Ordering Recommendation
Monitor patients receiving creatine supplementation.
Mnemonic
Methodology
Liquid Chromatography-Tandem Mass Spectrometry
Performed
Mon
Reported
2-9 days
New York DOH Approval Status
Specimen Required
Plain Red, Serum Separator Tube (SST), Green (Sodium or Lithium Heparin), or Lavender (K2EDTA).
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.
Ambient: 6 hours; Refrigerated: 1 week; Frozen: 6 months (Three freeze/thaw cycles are acceptable.)
Reference Interval
Effective May 20, 2013
Age |
Reference Interval |
---|---|
10 years or less | 37.0 - 117.0 µmol/L |
11 years or greater | 9.0 - 90.0 µmol/L |
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
To evaluate inherited disorders of creatine metabolism or transport, please order Creatine Disorders Panel, Plasma or Serum (ARUP test code 2002328) and/or Creatine Disorders Panel, Urine (ARUP test code 2002333).
Hotline History
CPT Codes
82540
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
2002331 | Creatine, Serum/Plasma | 15045-8 |
2002342 | Creatine, Serum/Plasma - mg/dL | 2148-5 |
Aliases
- serum or plasma creatine