Gamma Glutamyl Transferase, Serum or Plasma Gamma-Hydroxybutyric Acid, Serum or Plasma – Screen with Reflex to Confirmation/Quantitation Gamma-Hydroxybutyric Acid, Urine – Screen with Reflex to Confirmation/Quantitation Ganglioside (Asialo-GM1, GM1, GM2, GD1a, GD1b, and GQ1b) Antibodies Ganglioside (GM1) Antibodies, IgG and IgM Ganglioside (GM1, GD1b, and GQ1b) Antibodies, IgG and IgM Gastric Analysis Gabapentin Gastric Parietal Cell Antibody, IgG Gabapentin, Urine Gastrin Galactose-1-Phosphate in Red Blood Cells Gastrin by Immunohistochemistry Galactose-1-Phosphate Uridyltransferase Gastrin, 1 Minute Galactosemia (GALT) 9 Mutations, Fetal Gastrin, 10 Minute Galactosemia (GALT) Enzyme Activity and 9 Mutations Gastrin, 2 Minute Galactosemia (GALT), Sequencing
