Test Overview
Test Methodology
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Test Usage
Evaluating patients with a clinical suspicion of arginine:glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency, and creatine transporter deficiency using plasma specimens
Reference Range *
Interpretive report provided
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Tuesday
Analytic Time
4 - 10 days
Soft Order Code
CRDPP
Laboratory
Sendout
Reference Laboratory
Mayo CRDPP
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect specimen in an EDTA lav top tube. Spin and aliquot into a screw-capped plastic tube. Send to Specimen Processing frozen
Alternate Specimen
Green top (sodium heparin) or ACD
Normal Volume
0.5 mL plasma
Minimum Volume
0.1 mL plasma
Storage Temperature
Frozen preferred, refrigerated acceptable
Additional Information
Test performed by Mayo Clinic Laboratories
Billing
CPT Code
82540, 82565, 82542