Creatine, Serum or Plasma
2002340
 
Ordering Recommendation
Mnemonic
CRTN SP
Methodology
Liquid Chromatography/Tandem Mass Spectrometry
Performed
Mon
Reported
2-9 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Plain red, serum separator tube, green (sodium or lithium heparin), or lavender (EDTA).  
Specimen Preparation
Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.2 mL)  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
Specimens exposed to more than one freeze/thaw cycle.  
Remarks
 
Stability
Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 weeks  
Reference Interval
Effective May 20, 2013
Age Reference Interval
10 years or less 37.0 -​ 117.0
11 years or greater 9.0 -​ 90.0
Interpretive Data


See Compliance Statement B: www.aruplab.com/CS
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).
CPT Code(s)
82540
Components
Component Test Code*Component Chart Name
2002331Creatine, Plasma
2002342Creatine, Plasma - mg/dL
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • serum or plasma creatine