| controller | Company website | 1 |
| Controls For Blood-Gases, (Assayed And Unassayed) | Federal registry | 1 |
| Coronavirus Antigen Detection Test System. | Federal registry | 1 |
| Counter, Cell, Automated (Particle Counter) | Federal registry | 1 |
| Counter, Differential Cell | Federal registry | 1 |
| Couplers | Company website | 1 |
| C-Reactive Protein, Antigen, Antiserum, And Control | Federal registry | 1 |
| Cresolphthalein Complexone, Calcium | Federal registry | 1 |
| Cuvette, Thermostated | Federal registry | 1 |
| Cyclosporine | Federal registry | 1 |
| Cytokeratin Fragments 21-1 Eia Kit | Federal registry | 1 |
| data cables | Company website | 1 |
| detectors | Company website | 1 |
| Detergent | Federal registry | 1 |
| Device, Biofeedback | Federal registry | 1 |
| Device, Digital Image Storage, Radiological | Federal registry | 1 |
| Device, General Purpose, Hematology | Federal registry | 1 |
| Devices Detecting Influenza A, B, And C Virus Antigens | Federal registry | 1 |
| Device To Detect And Measure Procalcitonin (Pct) In Human Clinical Specimens | Federal registry | 1 |
| Device, Vein Location, Liquid Crystal | Federal registry | 1 |
| Diazo (Colorimetric), Nitrite (Urinary, Non-Quant) | Federal registry | 1 |
| Diazo Colorimetry, Bilirubin | Federal registry | 1 |
| Diazonium Colorimetry, Urobilinogen (Urinary, Non-Quant.) | Federal registry | 1 |
| Differential Rate Kinetic Method, Cpk Or Isoenzymes | Federal registry | 1 |
| Dilator, Vessel, For Percutaneous Catheterization | Federal registry | 1 |
| Diluent, Blood Cell | Federal registry | 1 |
| Dispenser, Solid Medication | Federal registry | 1 |
| Displays | Company website | 1 |
| Drug Mixture Control Materials | Federal registry | 1 |
| Drug Specific Control Materials | Federal registry | 1 |
| dry eye | Company website | 1 |
| Dye-Indicator, Ph (Urinary, Non-Quantitative) | Federal registry | 1 |
| Electrocardiograph | Federal registry | 1 |
| Electrode, Ion Specific, Calcium | Federal registry | 1 |
| Electrode, Ion-Specific, Chloride | Federal registry | 1 |
| Electrode, Ion Specific, Potassium | Federal registry | 1 |
| Electrode, Ion Specific, Sodium | Federal registry | 1 |
| Electrode Measurement, Blood-Gases (Pco2, Po2) And Blood Ph | Federal registry | 1 |
| Electrophoretic, Gamma-Glutamyl Transpeptidase Isoenzymes | Federal registry | 1 |
| Endoscope, Neurological | Federal registry | 1 |
| Enzymatic, Carbon-Dioxide | Federal registry | 1 |
| Enzymatic Esterase--Oxidase, Cholesterol | Federal registry | 1 |
| Enzymatic Method, Ammonia | Federal registry | 1 |
| Enzymatic Method, Bilirubin | Federal registry | 1 |
| Enzymatic Method, Creatinine | Federal registry | 1 |
| Enzymatic Radiochemical Assay, Tobramycin | Federal registry | 1 |
| Enzyme Immunoassay, Amphetamine | Federal registry | 1 |
| Enzyme Immunoassay, Barbiturate | Federal registry | 1 |
| Enzyme Immunoassay, Benzodiazepine | Federal registry | 1 |
| Enzyme Immunoassay, Cannabinoids | Federal registry | 1 |
