| Radioimmunoassay, Methaqualone | Federal registry | 1 |
| Radioimmunoassay, Progesterone | Federal registry | 1 |
| Radioimmunoassay, Prolactin (Lactogen) | Federal registry | 1 |
| Radioimmunoassay, Testosterones And Dihydrotestosterone | Federal registry | 1 |
| Radioimmunoassay, Thyroxine-Binding Globulin | Federal registry | 1 |
| Radioimmunoassay, Total Triiodothyronine | Federal registry | 1 |
| Radioimmunoassay, Tricyclic Antidepressant Drugs | Federal registry | 1 |
| Radioimmunoassay, Vancomycin | Federal registry | 1 |
| Rasp, Surgical, General & Plastic Surgery | Federal registry | 1 |
| Reagent, Occult Blood | Federal registry | 1 |
| Reagents, 2019-Novel Coronavirus Nucleic Acid | Federal registry | 1 |
| Reagents, Monkeypox Virus Nucleic Acid. | Federal registry | 1 |
| Reagents, Non-Variola Orthopoxvirus Nucleic Acid. | Federal registry | 1 |
| Reagents, Specific, Analyte | Federal registry | 1 |
| Reamer, Pulp Canal, Endodontic | Federal registry | 1 |
| recorder | Company website | 1 |
| Recorder, Magnetic Tape, Medical | Federal registry | 1 |
| Regulator, Vacuum | Federal registry | 1 |
| Relays | Company website | 1 |
| Remover, Crown | Federal registry | 1 |
| renal care | Company website | 1 |
| Research Use Only/Microbiology | Federal registry | 1 |
| Resin, Root Canal Filling | Federal registry | 1 |
| Respirator, Surgical | Federal registry | 1 |
| Respiratory Virus Panel Nucleic Acid Assay System | Federal registry | 1 |
| Restoration, Noble Metal | Federal registry | 1 |
| Restoration, Porcelain | Federal registry | 1 |
| Restoration, Porcelain-Fused-To-Metal | Federal registry | 1 |
| Restraint, Protective | Federal registry | 1 |
| Resuscitator, Manual, Non Self-Inflating | Federal registry | 1 |
| Retainer, Screw Expansion, Orthodontic | Federal registry | 1 |
| Retention Device, Suture | Federal registry | 1 |
| Retractor | Federal registry | 1 |
| Retractor, Fiberoptic | Federal registry | 1 |
| Retractor, Self-Retaining, For Neurosurgery | Federal registry | 1 |
| rifles | Company website | 1 |
| Ring, Ophthalmic (Flieringa) | Federal registry | 1 |
| Rongeur, Manual | Federal registry | 1 |
| rugged ups | Company website | 1 |
| Safety & PPE | Company website | 1 |
| Saliva, Artificial | Federal registry | 1 |
| Scale, Patient | Federal registry | 1 |
| Scalpel, One-Piece | Federal registry | 1 |
| Screwdriver, Surgical | Federal registry | 1 |
| Setter, Band, Orthodontic | Federal registry | 1 |
| Shaker/Stirrer | Federal registry | 1 |
| Shield, Eye, Ophthalmic (Including Sunlamp Protective Eyewear And Post-Mydriatic Eyewear) | Federal registry | 1 |
| Shoulder Prosthesis, Reverse Configuration | Federal registry | 1 |
| sinks | Company website | 1 |
| Site Survey Tool | Company website | 1 |
