Monitor patients receiving creatine supplementation.
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
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)
Ambient: 6 hours; Refrigerated: 1 week; Frozen: 6 months (Three freeze/thaw cycles are acceptable.)
Effective May 20, 2013
|10 years or less||37.0 - 117.0 µmol/L|
|11 years or greater||9.0 - 90.0 µmol/L|
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)
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).
|Component Test Code*||Component Chart Name||LOINC|
|2002342||Creatine, Serum/Plasma - mg/dL||2148-5|
- serum or plasma creatine