| GLF | Glucose, Fasting, Plasma or Serum Huntsville Hospital Laboratory/Madison Hospital Laboratory | 
      
        | GLUC | Glucose, Plasma or Serum Huntsville Hospital Laboratory/Madison Hospital Laboratory | 
      
        | UGL | Glucose, Qualitative, Random, Urine Huntsville Hospital Laboratory | 
      
        | CSFGL | Glucose, Spinal Fluid Huntsville Hospital Laboratory/Madison Hospital Laboratory | 
      
        | HEX4 | Glucotetrasaccharides, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | GLUT | GLUT-1 Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | GD65S | Glutamic Acid Decarboxylase (GAD65) Antibody Assay, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GD65C | Glutamic Acid Decarboxylase (GAD65) Antibody Assay, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | GLUTS | Glutamine Synthetase Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | GA2P | Glutaric Aciduria Type II Gene Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | GSH | Glutathione, Blood Mayo Clinic Laboratories in Rochester | 
      
        | GLT | Gluten, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GLYCS | Glycine Receptor Alpha1 IgG, Cell Binding Assay, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GLYCC | Glycine Receptor Alpha1 IgG, Cell Binding Assay, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | GSDGP | Glycogen Storage Disease Gene Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | G161 | Glycogen Storage Disease Panel (Bill Only) Mayo Clinic Laboratories in Rochester | 
      
        | GLYCF | Glycophorin A (CD235a) Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | GPNMB | Glycoprotein Non-Metastatic Melanoma Protein B (GPNMB), Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | GDOM | Glycyphagus domesticus, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GLYP3 | Glypican-3 Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | GOAT | Goat Epithelium, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GMILK | Goat's Milk, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GLDR | Goldenrod, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GOOS | Goose Feathers, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | GP210 | GP210 Antibody, IgG, Serum Mayo Clinic Laboratories in Rochester |