| Radioimmunoassay, Acth | Federal registry | 1 |
| Radioimmunoassay, Calcitonin | Federal registry | 1 |
| Radioimmunoassay, C-Peptides Of Proinsulin | Federal registry | 1 |
| Radioimmunoassay, Estriol | Federal registry | 1 |
| Radioimmunoassay, Estrone | Federal registry | 1 |
| Radioimmunoassay, Free Thyroxine | Federal registry | 1 |
| Radioimmunoassay, Glucagon | Federal registry | 1 |
| Radioimmunoassay, Human Growth Hormone | Federal registry | 1 |
| Radioimmunoassay, Immunoreactive Insulin | Federal registry | 1 |
| Radioimmunoassay, Pregnenolone | Federal registry | 1 |
| Radioimmunoassay, Total Estrogens, Nonpregnancy | Federal registry | 1 |
| Radioimmunoassay, Total Thyroxine | Federal registry | 1 |
| Radioimmunoassay, Tricyclic Antidepressant Drugs | Federal registry | 1 |
| Radioimmunoassay, Vancomycin | Federal registry | 1 |
| Rasp | Federal registry | 1 |
| Reagent, Borrelia Serological Reagent | Federal registry | 1 |
| Reagent, Occult Blood | Federal registry | 1 |
| Reagent, Schiff | Federal registry | 1 |
| Real Time Nucleic Acid Amplification System | Federal registry | 1 |
| Recorder, Paper Chart | Federal registry | 1 |
| Reduced- Montage Standard Electroencephalograph | Federal registry | 1 |
| Replacement Batteries | Company website | 1 |
| Research Use Only/Hematology Devices | Federal registry | 1 |
| Resin, Denture, Relining, Repairing, Rebasing | Federal registry | 1 |
| Respirator, Surgical | Federal registry | 1 |
| Respiratory Virus Panel Nucleic Acid Assay System | Federal registry | 1 |
| Retention Device, Suture | Federal registry | 1 |
| Retractor | Federal registry | 1 |
| Retractor, All Types | Federal registry | 1 |
| Retractor, Ophthalmic | Federal registry | 1 |
| RNA | Company website | 1 |
| Robotic Automation | Company website | 1 |
| Rongeur | Federal registry | 1 |
| Safranin | Federal registry | 1 |
| Saw, Powered, And Accessories | Federal registry | 1 |
| Scissors, General, Surgical | Federal registry | 1 |
| Scissors, Medical, Disposable | Federal registry | 1 |
| scout | Company website | 1 |
| Screen, Leaded, Operator Radiation Protector | Federal registry | 1 |
| Screwdriver | Federal registry | 1 |
| Screw, Fixation, Intraosseous | Federal registry | 1 |
| Sealant, Dural | Federal registry | 1 |
| Seal, Cervical, Mechanical, Unpowered | Federal registry | 1 |
| Semen Analysis Device | Federal registry | 1 |
| Sensors | Company website | 1 |
| Separator, Automated, Blood Cell, Diagnostic | Federal registry | 1 |
| servo drives | Company website | 1 |
| Set, Anesthesia, Paracervical | Federal registry | 1 |
| Set, Laryngeal Injection | Federal registry | 1 |
| Shield, Eye, Ophthalmic (Including Sunlamp Protective Eyewear And Post-Mydriatic Eyewear) | Federal registry | 1 |
