| Clamp, Penile | Federal registry | 1 |
| Clamp, Rubber Dam | Federal registry | 1 |
| Clamp, Vascular | Federal registry | 1 |
| Cleaner, Denture, Mechanical | Federal registry | 1 |
| Cleanser, Denture, Over The Counter | Federal registry | 1 |
| Cleanser, Root Canal | Federal registry | 1 |
| Clip, Removable (Skin) | Federal registry | 1 |
| Clip, Scalp | Federal registry | 1 |
| Closed Antineoplastic And Hazardous Drug Reconstitution And Transfer System | Federal registry | 1 |
| Coagulator-Cutter, Endoscopic, Unipolar (And Accessories) | Federal registry | 1 |
| Coating, Filling Material, Resin | Federal registry | 1 |
| Collections | Company website | 1 |
| Colorimeter, Photometer, Spectrophotometer For Clinical Use | Federal registry | 1 |
| Colorimetric Method, Gamma-Glutamyl Transpeptidase | Federal registry | 1 |
| Colorimetry, Acetaminophen | Federal registry | 1 |
| Colorimetry, Cholinesterase | Federal registry | 1 |
| Colorimetry, Salicylate | Federal registry | 1 |
| Complement C1q, Antigen, Antiserum, Control | Federal registry | 1 |
| Complement C3, Antigen, Antiserum, Control | Federal registry | 1 |
| Complement C4, Antigen, Antiserum, Control | Federal registry | 1 |
| Complex Assemblies | Company website | 1 |
| Component, External, Limb, Ankle/Foot | Federal registry | 1 |
| Components, Exercise | Federal registry | 1 |
| Computer, Blood-Pressure | Federal registry | 1 |
| Condenser, Amalgam And Foil, Operative | Federal registry | 1 |
| Condensers, Microscope | Federal registry | 1 |
| Condom | Federal registry | 1 |
| Condom, Synthetic | Federal registry | 1 |
| Condom With Nonoxynol-9 | Federal registry | 1 |
| Connector, Ureteral Catheter | Federal registry | 1 |
| Consumables | Company website | 1 |
| Containers | Company website | 1 |
| Container, Sharps | Federal registry | 1 |
| Container, Specimen Mailer And Storage, Sterile | Federal registry | 1 |
| Container, Specimen, Non-Sterile | Federal registry | 1 |
| Continence Care | Company website | 1 |
| Continuous Measurement Thermometer | Federal registry | 1 |
| Contract Manufacturing | Company website | 1 |
| Contractor, Surgical | Federal registry | 1 |
| Control, Plasma, Abnormal | Federal registry | 1 |
| Conversion To Creatinine, Creatine | Federal registry | 1 |
| copper assemblies | Company website | 1 |
| Cord, Retraction | Federal registry | 1 |
| Cotton, Roll | Federal registry | 1 |
| Counter, Differential Cell | Federal registry | 1 |
| Couplers | Company website | 1 |
| Cover, Biopsy Forceps | Federal registry | 1 |
| Cover, Limb | Federal registry | 1 |
| Covid-19 Multi-Analyte Respiratory Panel Nucleic Acid Devices | Federal registry | 1 |
| C-Reactive Protein, Antigen, Antiserum, And Control | Federal registry | 1 |
