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Lab Test Dictionary

Creatine Disorders Panel, Serum or Plasma (2002328)


Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)


AGAT; Creatinine; GAA; GAMT; Guanidinoacetic Acid

Specimen Type

Serum or Plasma

Performing Lab


Epic ID

Other Reference Test

Lab Test Days


Standard TAT

2-9 Days

Collection Information

Specimen Required

1-2 mL Blood

Container Type

Gold (SST)

Collection Instructions

Plasma collected in a sodium heparin (green-top), lithium heparin (green-top) or EDTA (lavender-top) tube is also acceptable.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp=6 Hours; Refrigerate=1 Week; Frozen=6 Months

Test Volume Required

1 mL Serum or Plasma

Minimum Test Volume

0.2 mL Serum or Plasma

Processing Instructions

Separate serum or plasma within 6 hours of collection. Complete an ARUP requisition and submit with specimen frozen. Call Apollo Courier Service for pick-up Monday-Friday.

CPT Codes

82540; 82542