ARUP's Laboratory Test Directory

Creatine Disorders Panel, Plasma or Serum : 2002328
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Patient History For Biochemical Genetics
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Additional Technical Information


Mnemonic: CRTN DIS P

Methodology: Liquid Chromatography/Tandem Mass Spectrometry
Performed: Mon
Reported: 2-9 days
Specimen Required: Collect: Green (sodium or lithium heparin), lavender (EDTA), plain red, or serum separator tube.

Specimen Preparation: Separate 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.

Remarks: 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 http://www.aruplab.com/patienthistory or by contacting ARUP Client Services.

Unacceptable Conditions: Specimens exposed to more than one freeze/thaw cycle.

Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 weeks
Reference Interval:
Available Separately Components Reference Interval
Creatine, Plasma By report
Guanidinoacetic Acid, Plasma By report

Interpretive Data:

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 82540; 83789
Cross References: AGAT (Creatine Disorders Panel, Plasma or Serum), GAA + Creatine (Creatine Disorders Panel, Plasma or Serum), GAMT (Creatine Disorders Panel, Plasma or Serum), Guanidinoacetic Acid + Creatine (Creatine Disorders Panel, Plasma or Serum)