| YECSLT | E coli Shiga-like Toxin by EIA | — |
| YRAPANEL | Early and Established Rheumatoid Arthritis (RA) Panel | — |
| YESSP | Early Sjogren's Syndrome Profile | — |
| YEEEP | Eastern Equine Encephalitis Ab, IgG & IgM | — |
| YECNA | Echinococcus Antibody, IgG | — |
| YECHO | Echovirus Antibodies | — |
| YECUMP | Eculizumab Monitoring Panel, Serum | — |
| YECULI | Eculizumab, Serum | — |
| YEFXR | Effexor (Venlafaxine) | — |
| YEGGCOM | Egg Components IgE | — |
| YEGGWHT | Egg White, IgE | — |
| YEGGWHL | Egg Whole IgE | — |
| YEGGYLK | Egg Yolk IgE | — |
| YEDSGG | Ehlers-Danlos Syndrome Gene Panel, Varies | — |
| YEPDP | Ehrlichia and Anaplasma by PCR | — |
| YEHAB | Ehrlichia chaffeensis Antibodies, IgG & IgM | — |
| YEOPF | Electrolyte & Osmolality Prof, Fecal | — |
| YLYTS | Electrolytes | Please see individual components for methodology |
| YELAIR | Elution & Antibody Identification, RBC | — |
| YENCES | Encephalopathy, Autoimmune Evaluation, Serum | — |
| YEMAAL | Endomysial Antibody, IgA | — |
| YEMGA | Endomysial Antibody, IgG | — |
| YEBAAG | Entamoeba histolytica Antibody, IgG | — |
| YEMAG | Entamoeba Histolytica Antigen, Stool | — |
| YEVPCR | Enterovirus by PCR | — |
| YEOCP | Eosinophil Cationic Protein | — |
| YCYEOS | Eosinophils Sputum/Urine, Cytology | — |
| YEBA | Epstein Barr Virus (EBV) Ab to Early D Antigen, IgG | — |
| YEBNA | Epstein Barr Virus (EBV) Ab to Nuclear Antigen, IgG | — |
| YEBVCG | Epstein Barr Virus (EBV) Ab to Viral Capsid Ag, IgG | — |
| YEBCM | Epstein Barr Virus (EBV) Ab to Viral Capsid Ag, IgM | — |
| YEBVA | Epstein Barr Virus (EBV) Antibodies Panel | — |
| YEBVQ | Epstein Barr Virus (EBV) DNA Quantitative, Blood | — |
| YEBVDO | Epstein Barr Virus (EBV) DNA Quantitative, Other | — |
| YEPWB | Erythrocyte Porphyrin, (EP), Whole Blood | — |
| YEPOES | Erythropoietin | — |
| YE2 | Estradiol | Electrochemiluminescence Immunoassay |
| YESDIOL | Estradiol (Adult Males, Children, Postmenopausal Females, or Individuals on Estrogen-Suppressing Hormone Therapy) | Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry |
| YE3 | Estriol | — |
| YESTS | Estrogens, Total & Fractionated | — |
| YESTR | Estrone (E1) | — |
| YETHAM | Ethambutol Quantitative, Serum or Plasma | Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry |
| YESUX | Ethosuximide (Zarontin) | — |
| YCDETHG | Ethyl Glucuronide/Sulfate, Urn Quant | — |
| YETGL | Ethylene Glycol, Serum | — |
| YELYS | Euglobulin Lysis Time | — |
| YEVMS | Everolimus (Afinitor/Zortress) | — |
| YEXPOSS | Exposure STI | — |
| YEXPOS | Exposure Work Incident Panel | — |
| YMYOSEXT1 | Extended Myositis Panel | — |
| YENABR | Extractable Nuclear Antigen Abs (RNP/Smith/SSA/SSB) | — |
| YEYECU | Eye Culture | — |
