Gas Chromatography-Mass Spectrometry (GC-MS)
Glycerate; Glycolate; Oxalate; PH1; PH2; 4-hydroxy-2-oxoglutarate; HOG; HOGA1; PH3
Mayo Medical Lab
Other Reference Test
Varies; Batched 2 x per Month; 8 A.M.
1.1-10 mL Urine
Fasting overnight 12-14 hours. Have patient void the first-morning specimen, then collect specimen within 2 hours of first-void while patient continues to fast. Fluids are allowed. No preservative. Immediately freeze specimen.
Room Temp: Unacceptable; Refrigerated: 14 Days; Frozen: 90 Days (Preferred)
10 mL Urine
1.1 mL Urine