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
Synonyms
    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
    NY State Approved
    No