| Desmosterol | Serum or Plasma | Chemistry - non-challenge | LP382489-5 | 2 |
| Deuteroporphyrin | LP14345-0 | 2 |
| Deuteroporphyrin | Stool | Chemistry - non-challenge | LP386441-2 | 2 |
| Dihydrothymine | LP199588-7 | 2 |
| Docosahexaenoate (C22:6w3) | Serum or Plasma | Chemistry - non-challenge | LP382116-4 | 2 |
| Docosapentaenate (C22:5w3) | LP33088-3 | 2 |
| Docosapentaenate (C22:5w6) | LP33089-1 | 2 |
| Docosatetraenoate (C22:4w6) | LP33086-7 | 2 |
| Docosenoate (C22:1) | LP33068-5 | 2 |
| Dodecanoylcarnitine (C12) | LP19320-8 | 2 |
| Dodecenoylcarnitine (C12:1) | LP19319-0 | 2 |
| DOPamine | Serum or Plasma | Chemistry - non-challenge | LP381206-4 | 2 |
| Elliptocytes | LP15192-5 | 2 |
| Endocrine disorders | LP56737-7 | 2 |
| Endogenous thrombin potential | LP426525-4 | 2 |
| Endogenous thrombin potential | Platelet poor plasma | Coagulation | LP427795-2 | 2 |
| Eosinophils | Blood cord | Hematology and Cell counts | LP392779-7 | 2 |
| Eosinophils | Body fluid | Hematology and Cell counts | LP392780-5 | 2 |
| Eosinophils | Cerebral spinal fluid | Hematology and Cell counts | LP392781-3 | 2 |
| Eosinophils | Peritoneal fluid | Hematology and Cell counts | LP392784-7 | 2 |
| Eosinophils | Pleural fluid | Hematology and Cell counts | LP392785-4 | 2 |
| Eosinophils | Stool | Hematology and Cell counts | LP392787-0 | 2 |
| Eosinophils | Synovial fluid | Hematology and Cell counts | LP392788-8 | 2 |
| Eosinophils | Vitreous fluid | Hematology and Cell counts | LP392790-4 | 2 |
| EPINEPHrine | Plasma | Chemistry - non-challenge | LP381217-1 | 2 |
| Epithelial casts | Urine sediment | Urinalysis | LP402433-9 | 2 |
| Epithelial cells.non-squamous | Urine | Urinalysis | LP402467-7 | 2 |
| Epithelial cells.non-squamous | Urine sediment | Urinalysis | LP402468-5 | 2 |
| Epithelial cells.renal | Urine sediment | Urinalysis | LP402470-1 | 2 |
| Epithelial cells.squamous | Sputum | Hematology and Cell counts | LP393483-5 | 2 |
| Epithelial cells.squamous | Urine | Urinalysis | LP402471-9 | 2 |
| Erythrocyte clumps | Urine sediment | Urinalysis | LP402479-2 | 2 |
| Erythrocyte distribution width | LP17698-9 | 2 |
| Erythrocyte distribution width | Red Blood Cells | Hematology and Cell counts | LP393348-0 | 2 |
| Erythrocytes | Blood | Hematology and Cell counts | LP392503-1 | 2 |
| Erythrocytes | Vaginal | Hematology and Cell counts | LP392518-9 | 2 |
| Estradiol | LP14497-9 | 2 |
| Estradiol | Serum or Plasma | Chemistry - non-challenge | LP381268-4 | 2 |
| Ethanol | Blood | Drug toxicology | LP391416-7 | 2 |
| Ethanol | Urine | Drug toxicology | LP391425-8 | 2 |
| Ethanolamine | LP15562-9 | 2 |
| Ethyl glucuronide | LP36909-7 | 2 |
| Ethyl glucuronide | Urine | Drug toxicology | LP391431-6 | 2 |
| Ethylmalonate | Urine | Chemistry - non-challenge | LP383941-4 | 2 |
| Fat | Stool | Chemistry - non-challenge | LP382042-2 | 2 |
| Fatty acid oxidation defects | LP56738-5 | 2 |
| Fatty acids.very long chain C22:0 (Docosanoate) | LP28818-0 | 2 |
| Fatty acids.very long chain C24:0 (Tetracosanoate) | Serum or Plasma | Chemistry - non-challenge | LP382234-5 | 2 |
| Fatty acids.very long chain C26:0 (Hexacosanoate) | Serum or Plasma | Chemistry - non-challenge | LP382240-2 | 2 |
| Fatty acids.very long chain C26:1 (Hexacosenoate) | Serum or Plasma | Chemistry - non-challenge | LP382245-1 | 2 |
| Fatty acids.very long chain.C22:1n9 (Erucate) | LP89598-4 | 2 |
| Fatty casts | Urine sediment | Urinalysis | LP402435-4 | 2 |
| Ferritin | LP15568-6 | 2 |
| Ferritin | Serum or Plasma | Chemistry - non-challenge | LP385083-3 | 2 |
| Fetal trisomy 18 risk | LP410749-8 | 2 |
| Fetal trisomy 18 risk | Fetus | Chemistry - non-challenge | LP417008-2 | 2 |
| Fetal trisomy 21 risk | LP410748-0 | 2 |
| Fetal trisomy 21 risk | Fetus | Chemistry - non-challenge | LP417011-6 | 2 |
| Fibrin+Fibrinogen fragments | LP15990-2 | 2 |
| Fibronectin.fetal | Vaginal | Chemistry - non-challenge | LP384779-7 | 2 |
| Free Hemoglobin | Plasma | Hematology and Cell counts | LP392476-0 | 2 |
| Fructose | Semen | Chemistry - non-challenge | LP385503-0 | 2 |
| Fumarate | LP15583-5 | 2 |
| Fungi.filamentous | LP16854-9 | 2 |
| Fungi.filamentous | Urine sediment | Urinalysis | LP402487-5 | 2 |
| Fungi.yeastlike | Urine sediment | Urinalysis | LP402488-3 | 2 |
| Fungus | XXX | Microbiology | LP376136-0 | 2 |
| Galactose | DBS | Chemistry - non-challenge | LP385513-9 | 2 |
| Galactose 1 phosphate uridyl transferase | LP14026-6 | 2 |
| Galactose 1 phosphate uridyl transferase | DBS | Chemistry - non-challenge | LP382993-6 | 2 |
| Galactosylceramidase | White blood cells | Chemistry - non-challenge | LP385763-0 | 2 |
| Gamma butyrobetaine | Cerebral spinal fluid | Chemistry - non-challenge | LP384574-2 | 2 |
| Gamma butyrobetaine | DBS | Chemistry - non-challenge | LP384573-4 | 2 |
| Gamma butyrobetaine | Serum or Plasma | Chemistry - non-challenge | LP384575-9 | 2 |
| Gamma globulin | Cerebral spinal fluid | Chemistry - non-challenge | LP384749-0 | 2 |
| Gamma globulin | Serum or Plasma | Chemistry - non-challenge | LP384750-8 | 2 |
| Gamma Linolenate (C18:3w6) | LP33070-1 | 2 |
| Gammopathy | LP18628-5 | 2 |
| Gardnerella sp | LP30566-1 | 2 |
| Gardnerella vaginalis | LP17121-2 | 2 |
| Gastrointestinal Hormones- | LP31655-1 | 2 |
| Globulin | Serum | Chemistry - non-challenge | LP384596-5 | 2 |
| Glucose | Blood | Chemistry - non-challenge | LP385526-1 | 2 |
| Glucose | Cerebral spinal fluid | Chemistry - non-challenge | LP385532-9 | 2 |
| Glucose | Serum or Plasma | Chemistry - non-challenge | LP385540-2 | 2 |
| Glucose | Stool | Chemistry - non-challenge | LP385542-8 | 2 |
| Glucose | Synovial fluid | Chemistry - non-challenge | LP385543-6 | 2 |
| Glucosylceramidase | LP15604-9 | 2 |
| Glutarate | Urine | Chemistry - non-challenge | LP386231-7 | 2 |
| Glutarylcarnitine (C5-DC) | DBS | Chemistry - non-challenge | LP381669-3 | 2 |
| Glycerate | Urine | Chemistry - non-challenge | LP385557-6 | 2 |
| Glycerol | LP15619-7 | 2 |
| Glycolate | Urine | Chemistry - non-challenge | LP383986-9 | 2 |
| Glyoxylate | LP18438-9 | 2 |
| Glyoxylate | Urine | Chemistry - non-challenge | LP386282-0 | 2 |
| Granular casts | Urine sediment | Urinalysis | LP402437-0 | 2 |
| Granulocytes | Body fluid | Hematology and Cell counts | LP392631-0 | 2 |
| Granulocytes | Cerebral spinal fluid | Hematology and Cell counts | LP392632-8 | 2 |
| Granulocytes | Peritoneal fluid | Hematology and Cell counts | LP443828-1 | 2 |
| Granulocytes | Pleural fluid | Hematology and Cell counts | LP443829-9 | 2 |