| YDLCTU | D Lactate Urine | — |
| YDLAC | D-Lactate, Plasma | Gas Chromatography Mass Spectrometry (GCMS) Stable Isotope Dilution Analysis |
| YDPTER | D. pteronyssinus IgE | — |
| YDDIMER | DDimer | Fluorescence Immunoassay |
| YDMS2 | Dementia, Autoimmune/Paraneoplastic Evaluation, Serum | — |
| YDMRL | Demerol (Meperidine) | — |
| YDFVA | Dengue Fever Virus Ab, IgG & IgM | — |
| YDPYC | Deoxypyridinoline Crosslinks | — |
| YDERMP | Dermatomyositis Autoantibody Panel | — |
| YDESI | Desipramine | — |
| YDEXA | Dexamethasone | — |
| YDHEA | DHEA (Dehydroepiandrosterone), Serum | — |
| YDHES | DHEA Sulfate (Dehydroepiandrosterone Sulfate) | — |
| YDIAZ | Diazepam (Valium) | — |
| YDIC | DIC Screen | — |
| YDIGO | Digoxin | Electrochemiluminescence Immunoassay |
| YDPYD | Dihydropyrimidine Dehydrogenase (DPYD), 3 Variants | — |
| YDHRP | Dihydrorhodamine (DHR) Flow PMA Test | — |
| YDHT | Dihydrotestosterone | — |
| YDHTFR | Dihydrotestosterone (DHT) Free, LC/MS/Dialysis | — |
| YTABP | Diphtheria & Tetanus Antibodies, IgG | — |
| YDIPA | Diphtheria Antibody | — |
| YDIPCU | Diphtheria Culture | — |
| YDIBIL | Direct and Indirect Bilirubin | Photometric, Colormetric Diazo Method |
| YDAT | Direct Antiglobulin (Direct Coombs) | — |
| YDNAS | Dnase-B Antibody | — |
| YDOGD | Dog Hair/Dander IgE | — |
| YDNTHL | Donath Landsteiner | — |
| YDBDNAC | Double Stranded DNA (dsDNA) Antibody, IgG by IFA | — |
| YDOA9U | Drug Panel 9, Urine - Reflex to Conf/Quant | Qualitative Enzyme Multiplied Immunoassay Technique (EMIT)/Quantitative Gas Chromatography-Mass Spectrometry (GC-MS)/Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YDOA9 | Drugs of Abuse 9 Panel, Serum or Plasma | Qualitative Enzyme-Linked Immunosorbent Assay (ELISA) / Quantitative Gas Chromatography-Mass Spectrometry (GC-MS) / Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YDRS10 | Drugs of Abuse Screen 10 Panel, Chain of Custody | — |
| YDRS7 | Drugs of Abuse Screen 7 Panel, Chain of Custody | — |
| YTOX9 | Drugs of Abuse Screen 9 Panel, Urine | Fluorescence Immunoassay |
| YADNC | dsDNA (Double Stranded DNA) Antibody, IgG | Multiplex Flow Immunoassay |
