| Gamma glutamyl transferase | Serum or Plasma | Chemistry - non-challenge | LP383003-3 | 1 |
| Gamma Linolenate (C18:3w6) | Red Blood Cells | Chemistry - non-challenge | LP382146-1 | 1 |
| Gamma Linolenate (C18:3w6) | Serum or Plasma | Chemistry - non-challenge | LP382147-9 | 1 |
| Gamma tocopherol | LP99929-9 | 1 |
| Gamma tocopherol | Red Blood Cells | Chemistry - non-challenge | LP385208-6 | 1 |
| Gardnerella vaginalis | Genital | Microbiology | LP374881-3 | 1 |
| Gardnerella vaginalis | Vaginal | Microbiology | LP374882-1 | 1 |
| Gastrin | LP14665-1 | 1 |
| Gastrin | Serum or Plasma | Chemistry - non-challenge | LP381316-1 | 1 |
| Gaucher disease | LP113916-3 | 1 |
| Gaucher disease | DBS | Chemistry - non-challenge | LP418981-9 | 1 |
| General body height (length) | LP7768-7 | 1 |
| General body weight | LP7774-5 | 1 |
| Genetics results | LP70194-3 | 1 |
| Giant platelets | LP16872-1 | 1 |
| Giant platelets | Blood | Hematology and Cell counts | LP393233-4 | 1 |
| Giardia lamblia | LP14122-3 | 1 |
| Giardia lamblia | Stool | Microbiology | LP376765-6 | 1 |
| Giardia sp | LP14817-8 | 1 |
| Globotriaosylsphingosine | Blood | Chemistry - non-challenge | LP385765-5 | 1 |
| Globotriaosylsphingosine | DBS | Chemistry - non-challenge | LP385766-3 | 1 |
| Globotriaosylsphingosine | Serum or Plasma | Chemistry - non-challenge | LP417245-0 | 1 |
| Glomerular filtration rate | Serum or Plasma | Chemistry - non-challenge | LP443436-3 | 1 |
| Glucagon | LP14667-7 | 1 |
| Glucagon | Serum or Plasma | Chemistry - non-challenge | LP381334-4 | 1 |
| Glucopsychosine | Blood | Chemistry - non-challenge | LP385768-9 | 1 |
| Glucopsychosine | DBS | Chemistry - non-challenge | LP385769-7 | 1 |
| Glucopsychosine | Serum or Plasma | Chemistry - non-challenge | LP385770-5 | 1 |
| Glucose | Blood arterial | Chemistry - non-challenge | LP385527-9 | 1 |
| Glucose | Body fluid | Chemistry - non-challenge | LP385531-1 | 1 |
| Glucose | Dialysis fluid | Chemistry - non-challenge | LP385533-7 | 1 |
| Glucose | Serum or Plasma | Chemistry - challenge | LP387194-6 | 1 |
| Glucose | Serum, Plasma or Blood | Chemistry - non-challenge | LP385541-0 | 1 |
| Glucose phosphate isomerase | LP15028-1 | 1 |
| Glucose phosphate isomerase | Red Blood Cells | Chemistry - non-challenge | LP383007-4 | 1 |
| Glucose-6-Phosphate dehydrogenase | DBS | Chemistry - non-challenge | LP383013-2 | 1 |
| Glucosylceramidase | DBS | Chemistry - non-challenge | LP385781-2 | 1 |
| Glucosylceramidase | White blood cells | Chemistry - non-challenge | LP385785-3 | 1 |
| Glutaconate | LP18436-3 | 1 |
| Glutaconate | Urine | Chemistry - non-challenge | LP386241-6 | 1 |
| Glutamate | Amniotic fluid | Chemistry - non-challenge | LP383887-9 | 1 |
| Glutamate | Cerebral spinal fluid | Chemistry - non-challenge | LP383890-3 | 1 |
| Glutamate | DBS | Chemistry - non-challenge | LP383888-7 | 1 |
| Glutamate | Serum or Plasma | Chemistry - non-challenge | LP383892-9 | 1 |
| Glutamine | Amniotic fluid | Chemistry - non-challenge | LP383904-2 | 1 |
| Glutamine | Cerebral spinal fluid | Chemistry - non-challenge | LP383907-5 | 1 |
| Glutamine | Serum or Plasma | Chemistry - non-challenge | LP383908-3 | 1 |
| Glutarate | DBS | Chemistry - non-challenge | LP386228-3 | 1 |
| Glutarate | Serum or Plasma | Chemistry - non-challenge | LP386230-9 | 1 |
| Glutarylcarnitine (C5-DC) | Serum or Plasma | Chemistry - non-challenge | LP381671-9 | 1 |
| Glutathione reductase | LP15612-2 | 1 |
| Glutathione reductase | Red Blood Cells | Chemistry - non-challenge | LP383034-8 | 1 |
| Glycerate | Serum or Plasma | Chemistry - non-challenge | LP385556-8 | 1 |
| Glycerol | Serum | Chemistry - non-challenge | LP385629-3 | 1 |
| Glycerol | Serum or Plasma | Chemistry - non-challenge | LP385630-1 | 1 |
| Glycine | Amniotic fluid | Chemistry - non-challenge | LP383916-6 | 1 |
| Glycine | Cerebral spinal fluid | Chemistry - non-challenge | LP383919-0 | 1 |
| Glycine | DBS | Chemistry - non-challenge | LP383917-4 | 1 |
| Glycine | Serum or Plasma | Chemistry - non-challenge | LP383921-6 | 1 |
| Glycochenodeoxycholate | LP411042-7 | 1 |
| Glycochenodeoxycholate | Serum or Plasma | Chemistry - non-challenge | LP416978-7 | 1 |
| Glycocholate | LP411033-6 | 1 |
| Glycocholate | Serum or Plasma | Chemistry - non-challenge | LP416974-6 | 1 |
| Glycodeoxycholate | LP411034-4 | 1 |
| Glycodeoxycholate | Serum or Plasma | Chemistry - non-challenge | LP416975-3 | 1 |
| Glycohyodeoxycholate | LP411049-2 | 1 |
| Glycohyodeoxycholate | Serum or Plasma | Chemistry - non-challenge | LP416979-5 | 1 |
| Glycolate | Serum or Plasma | Chemistry - non-challenge | LP383984-4 | 1 |
| Glycolithocholate | LP411035-1 | 1 |
| Glycolithocholate | Serum or Plasma | Chemistry - non-challenge | LP416976-1 | 1 |
| Glycosaminoglycans | LP15624-7 | 1 |
| Glycoursodeoxycholate | LP411037-7 | 1 |
| Glycoursodeoxycholate | Serum or Plasma | Chemistry - non-challenge | LP416977-9 | 1 |
| Granulocyte macrophage colony stimulating factor | LP421049-0 | 1 |
| Granulocyte macrophage colony stimulating factor | Serum or Plasma | Chemistry - non-challenge | LP427411-6 | 1 |
| Granulocytes | Dialysis fluid peritoneal | Hematology and Cell counts | LP392633-6 | 1 |
| Granulocytes | Pericardial fluid | Hematology and Cell counts | LP443827-3 | 1 |
| Guanidinoacetate | Cerebral spinal fluid | Chemistry - non-challenge | LP382614-8 | 1 |
| Guanidinoacetate | Urine | Chemistry - non-challenge | LP426541-1 | 1 |
| Guanine | Cerebral spinal fluid | Chemistry - non-challenge | LP383506-5 | 1 |
| Guanine | Serum or Plasma | Chemistry - non-challenge | LP383507-3 | 1 |
| Guanosine | Cerebral spinal fluid | Chemistry - non-challenge | LP383509-9 | 1 |
| Guanosine | Serum or Plasma | Chemistry - non-challenge | LP383510-7 | 1 |
| Haemophilus ducreyi | LP15183-4 | 1 |
| Haemophilus ducreyi | XXX | Microbiology | LP374953-0 | 1 |
| Haemophilus sp | LP17146-9 | 1 |
| Halogenated organic molecules | LP18116-1 | 1 |
| Haptoglobin | LP16411-8 | 1 |
| Haptoglobin | Serum or Plasma | Hematology and Cell counts | LP393679-8 | 1 |
| Hb SS, Hb SC, Hb SB thal | LP56768-2 | 1 |
| Heinz bodies | LP17332-5 | 1 |
| Heinz bodies | Blood | Hematology and Cell counts | LP393388-6 | 1 |
| Helmet cells | LP14570-3 | 1 |
| Helmet cells | Blood | Hematology and Cell counts | LP393413-2 | 1 |
| Hemoglobin | Blood capillary | Hematology and Cell counts | LP392454-7 | 1 |
| Hemoglobin | Blood cord | Hematology and Cell counts | LP392455-4 | 1 |
| Hemoglobin | Blood cord arterial | Hematology and Cell counts | LP392456-2 | 1 |
| Hemoglobin | Blood cord venous | Hematology and Cell counts | LP392457-0 | 1 |
| Hemoglobin | Blood mixed venous | Hematology and Cell counts | LP392458-8 | 1 |
| Hemoglobin | Blood venous | Hematology and Cell counts | LP392459-6 | 1 |