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88697M
CREATINE DISORDERS PANEL, URINE

Test Code 88697M 
Test CREATINE DISORDERS PANEL, URINE 
Methodology Liquid-Chromatography-Tandem Mass Spectometry (LC-MS/MS)
Stable Isotope Dilution Analysis 
Description Useful for evaluation of patients with a clinical suspicion of inborn errors of creatine metabolism including AGAT deficiency, GAMT deficiency, andCrT1 defect. 
Specimen 1.0 mL (minimum 0.5 mL) from a random urine collection. Freeze immediately and send specimen FROZEN in a plastic, 13-mL urine tube.
NOTE: Correct specimen collection and handling is crucial to achieve reliable results. 
Reference Values See "Creatine Disorders Panel, Urine, Reference Values" 
Analytic Time 14 Days 
Day(s) Test Set Up Varies 
CPT Code(s) 82540  Creatine
82570  Creatinine
83789  Guanidinoacetate

Special Instructions