| DNL — Radioimmunoassay, Digoxin (125-I), Rabbit Antibody, Second Antibody Sep. | Class 2 / TX |
| DNN — Calibrators, Ethyl Alcohol | Class 2 / TX |
| DNO — Hemagglutination Inhibition, Gentamicin | Class 2 / TX |
| DNP — Thin Layer Chromatography, Ethosuximide | Class 2 / TX |
| DNQ — Radioimmunoassay, Digoxin (3-H), Rabbit Antibody, Coated Tubes Sep. | Class 2 / TX |
| DNS — Radioimmunoassay, Digoxin (125-I), Rabbit Antibody, Double Label Sep. | Class 2 / TX |
| DNT — Liquid Chromatography, Methadone | Class 2 / TX |
| DNW — Radioimmunoassay, Digitoxin (3-H), Rabbit Antibody, Charcoal Sep. | Class 2 / TX |
| DNX — Lead, Protoporphyrin Zinc Method, Fluorometric | Class 2 / TX |
| DNZ — Atomic Absorption, Arsenic | Class 1 / TX |
| DOA — Radioimmunoassay, Digoxin (125-I), Goat Antibody, Anion Exchange, Resin Sep. | Class 2 / TX |
| DOB — Radioimmunoassay, Digitoxin (3-H) | Class 2 / TX |
| DOD — Gas Chromatography, Amphetamine | Class 2 / TX |
| DOE — Radioimmunoassay, Morphine (125-I), Goat Antibody Ammonium Sulfate Sep. | Class 2 / TX |
| DOF — Lead, Atomic Absorption | Class 2 / TX |
| DOG — Radioimmunoassay, Digoxin (125-I), Rabbit Antibody, Polyethylene Glycol | Class 2 / TX |
| DOH — Electrometry, Cholinesterase | Class 1 / TX |
| DOJ — Potassium Dichromate, Alcohol | Class 2 / TX |
| DOK — Free Radical Assay, Morphine | Class 2 / TX |
| DOL — Free Radical Assay, Lsd | Class 2 / TX |
| DOM — Thin Layer Chromatography, Benzoylecgnonine | Class 2 / TX |
| DON — Radioimmunoassay, Digoxin (125-I), Rabbit Antibody, Solid Phase Sep. | Class 2 / TX |
| DOO — Liquid Chromatography, Phenobarbital | Class 2 / TX |
| DOP — Mass Spectrometer, Clinical Use | Class 1 / TX |
| DOR — Radioimmunoassay, Digoxin (3-H), Bovine Antibody, Charcoal Sep. | Class 2 / TX |
| DOS — Thin Layer Chromatography, Primidone | Class 2 / TX |
| DOW — Radioimmunoassay, Digitoxin (3-H), Rabbit Antibody, Coated Tube | Class 2 / TX |
| DOX — Fluorometer, Lead (Dedicated Instruments) | Class 2 / TX |
| DOY — Radioimmunoassay, Digoxin (3-H), Goat Antibody, 2nd Antibody Sep. | Class 2 / TX |
| DOZ — Liquid Chromatography, Diphenylhydantoin | Class 2 / TX |
| DPA — Apparatus, General Use, Thin Layer Chromatography | Class 1 / TX |
| DPB — Radioimmunoassay, Digoxin (125-I), Rabbit Antibody, Charcoal Sep. | Class 2 / TX |
| DPD — Radioimmunoassay, Digoxin (3-H), Rabbit Antibody, Charcoal Sep. | Class 2 / TX |
| DPE — Thin Layer Chromatography, Diphenylhydantoin | Class 2 / TX |
| DPG — Radioimmunoassay, Digitoxin (125-I), Rabbit Antibody, Coated Tube Sep. | Class 2 / TX |
| DPH — Mercury, Atomic Absorption | Class 1 / TX |
| DPI — Radioimmunoassay, Digoxin (125-I), Bovine Antibody, Charcoal Sep. | Class 2 / TX |
| DPJ — Radioimmunoassay, Amphetamine (125-I), Goat Antibody, Ammonium Sulfate Sep. | Class 2 / TX |
| DPK — Liquid Chromatography, Morphine | Class 2 / TX |
| DPL — Radioimmunoassay, Digitoxin (125-I), Bovine Antibody, Charcoal Sep. | Class 2 / TX |
| DPM — Columns, Liquid Chromatography | Class 1 / TX |
| DPN — Thin Layer Chromatography, Propoxyphene | Class 2 / TX |
| DPO — Radioimmunoassay, Digoxin (125-I), Rabbit Antibody, Coated Tube Sep. | Class 2 / TX |
| DPP — Free Radical Assay, Methadone | Class 2 / TX |
| DPQ — Liquid Chromatography, Primidone | Class 2 / TX |
| DPS — Electrocardiograph | Class 2 / CV |
| DPT — Probe, Blood-Flow, Extravascular | Class 2 / CV |
| DPW — Flowmeter, Blood, Cardiovascular | Class 2 / CV |
| DPZ — Oximeter, Ear | Class 2 / AN |
| DQA — Oximeter | Class 2 / AN |