Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Synonyms
AGAT; Creatinine; GAA; GAMT; Guanidinoacetic Acid
Specimen Type
Serum or Plasma
Performing Lab
ARUP
Epic ID
Other Reference Test
Lab Test Days
Monday
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
Refrigerate-OK/Frozen-OK
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