| 0090057 | Gabapentin |
| 2006301 | Gabapentin Quantitative, Urine |
| 0092442 | Galactokinase, Blood |
| 0081296 | Galactose-1-Phosphate in Red Blood Cells |
| 0080125 | Galactose-1-Phosphate Uridyltransferase |
| 0051176 | Galactosemia, (GALT) 9 Mutations |
| 0051270 | Galactosemia (GALT) 9 Mutations, Fetal |
| 0051175 | Galactosemia (GALT) Enzyme Activity and 9 Mutations |
| 2006697 | Galactosemia (GALT), Sequencing |
| 2007138 | Galectin-3, Serum |
| 0020009 | Gamma Glutamyl Transferase, Serum or Plasma |
| 0091193 | Gamma-Hydroxybutyric Acid, Serum or Plasma - Screen with Reflex to Confirmation/Quantitation |
| 0091161 | Gamma-Hydroxybutyric Acid, Urine - Screen with Reflex to Confirmation/Quantitation |
| 0051033 | Ganglioside (Asialo-GM1, GM1, GM2, GD1a, GD1b, and GQ1b) Antibodies |
| 0050591 | Ganglioside (GM1) Antibodies, IgG and IgM |
| 2004998 | Ganglioside (GM1, GD1b, and GQ1b) Antibodies, IgG and IgM |
| 0020149 | Gastric Analysis |
| 0099484 | Gastric Inhibitory Polypeptide |
| 0050596 | Gastric Parietal Cell Antibody, IgG |
| 0070075 | Gastrin |
| 2003896 | Gastrin by Immunohistochemistry |
| 2002674 | Gastrointestinal Stromal Tumor Mutation |
| 0051438 | Gaucher (GBA) 8 Mutations |
| 0051439 | Gaucher (GBA) 8 Mutations, Fetal |
| 2005633 | Genomic SNP Microarray, Products of Conception |
| 0090305 | Gentamicin, Peak Level |
| 0090130 | Gentamicin, Random Level |
| 0090310 | Gentamicin, Trough Level |
| 0060048 | Giardia Antigen by EIA |
| 0099439 | Giardia lamblia Antibody by IFA |
| 0051476 | Glaucoma (Primary Congenital), CYP1B1 Sequencing |
| 2003899 | Glial Fibrillary Acidic Protein (GFAP) by Immunohistochemistry |
| 0091357 | Glipizide, Serum or Plasma |
| 0051000 | Glomerular Basement Membrane Antibody, IgG by Multiplex Bead Assay |
| 2008403 | Glomerular Basement Membrane Antibody, IgG by Multiplex Bead Assay and IFA |
| 0049191 | Glomerular Basement Membrane Antibody, IgG (IFA) |
| 0020725 | Glomerular Filtration Rate, Estimated |
| 0099165 | Glucagon |
| 2003902 | Glucagon by Immunohistochemistry |
| 0080135 | Glucose-6-Phosphate Dehydrogenase |
| 0051684 | Glucose-6-Phosphate Dehydrogenase (G6PD) 2 Mutations |
| 0020503 | Glucose, Body Fluid |
| 0020515 | Glucose, CSF |
| 0020024 | Glucose, Plasma or Serum |
| 0020047 | Glucose Screen, Pregnancy |
| 0020542 | Glucose Tolerance Test |
| 0020543 | Glucose Tolerance Test, Pregnancy |
| 2003905 | Glucose Transporter-1 (GLUT-1) by Immunohistochemistry |
| 0020476 | Glucose, Urine |
| 2007163 | Glucose-6-Phosphate Dehydrogenase Deficiency (G6PD) Sequencing |
| 2001771 | Glutamic Acid Decarboxylase Antibody |
| 2002862 | Glutamic Acid Decarboxylase Antibody (GAD65) and Insulin Antibodies with Reflex to IA-2 Antibody |
| 2001510 | Glutarylcarnitine Quantitative, Urine |
| 2006328 | Glutathione Total |
| 0091353 | Glyburide, Serum or Plasma |
| 2003908 | Glycophorin A by Immunohistochemistry |
| 0091265 | Gold, Serum or Plasma |
| 0090665 | Gold, Urine |
| 0060110 | Gonorrhea Culture |
| 0060101 | Gram Stain |
| 2007173 | Granzyme B by Immunohistochemistry |
| 0070080 | Growth Hormone |
| 0070081 | Growth Hormone, 0 Minutes |
| 0070048 | Growth Hormone, 15 Minutes |
| 0070082 | Growth Hormone, 30 Minutes |
| 0070049 | Growth Hormone, 45 Minutes |
| 0070083 | Growth Hormone, 60 Minutes |
| 0070084 | Growth Hormone, 90 Minutes |
| 0070164 | Growth Hormone, 120 Minutes |
| 0092142 | Growth Hormone Antibody |
| 2003929 | Growth Hormone by Immunohistochemistry |
| 0070069 | Growth Hormone, Timed - Other |
