| Alarm, Blood-Pressure | Federal registry | 1 |
| Albumin, Antigen, Antiserum, Control | Federal registry | 1 |
| Albumin, Fitc, Antigen, Antiserum, Control | Federal registry | 1 |
| Alcian Blue | Federal registry | 1 |
| Aldehyde Fuchsin | Federal registry | 1 |
| Aligner, Sequential | Federal registry | 1 |
| Alizarin Red | Federal registry | 1 |
| Alloy, Gold-Based Noble Metal | Federal registry | 1 |
| Alloy, Other Noble Metal | Federal registry | 1 |
| Alternate Controller Enabled Insulin Infusion Pump | Federal registry | 1 |
| Amalgamator, Dental, Ac-Powered | Federal registry | 1 |
| Amnioscope, Transabdominal (Fetoscope) (And Accessories) | Federal registry | 1 |
| Analyzer, Body Composition | Federal registry | 1 |
| Analyzer, Chemistry (Sequential Multiple, Continuous Flow) Clinical Use | Federal registry | 1 |
| Analyzer, Spectrum, Electroencephalogram Signal | Federal registry | 1 |
| Anchor, Preformed | Federal registry | 1 |
| Anesthesia Conduction Kit | Federal registry | 1 |
| Aniline | Federal registry | 1 |
| Aniline Blue | Federal registry | 1 |
| Antigen(Complexed),Prostate Specific,(Cpsa) | Federal registry | 1 |
| Antigen, Inflammatory Response Marker, Sepsis | Federal registry | 1 |
| Antigen, Invasive Fungal Pathogens | Federal registry | 1 |
| Anti-Müllerian Hormone Test System | Federal registry | 1 |
| Antisera, If, Toxoplasma Gondii | Federal registry | 1 |
| Antiserum, Positive Control, Aspergillus Spp. | Federal registry | 1 |
| Apparatus, Air Handling, Enclosure | Federal registry | 1 |
| Apparatus, Autotransfusion | Federal registry | 1 |
| Apparatus, Electrosurgical | Federal registry | 1 |
| Apparatus, High Pressure Liquid Chromatography | Federal registry | 1 |
| Apparatus, Melting Point, Paraffin | Federal registry | 1 |
| Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component | Federal registry | 1 |
| Applicator, Absorbent Tipped, Sterile | Federal registry | 1 |
| Applicator, Vaginal | Federal registry | 1 |
| Applier, Hemostatic Clip | Federal registry | 1 |
| Apron, Leaded | Federal registry | 1 |
| Apron, Protective | Federal registry | 1 |
| Artificial Heart | Federal registry | 1 |
| Assayed Quality Control Material For Clinical Microbiology Assays | Federal registry | 1 |
| Assay, Enzyme Linked Immunosorbent, Hepatitis C Virus | Federal registry | 1 |
| Assay, Heparin | Federal registry | 1 |
| Assembly Capabilities | Company website | 1 |
| Assembly, Thigh/Knee/Shank/Ankle/Foot, External | Federal registry | 1 |
| At Home Intravaginal Insemination System | Federal registry | 1 |
| ATLAS 300I | Company website | 1 |
| Attachment, Eyepiece, For Insertion Of Prescription Lens | Federal registry | 1 |
| Attachment, Precision, All | Federal registry | 1 |
| Attachment, Teaching, For Endoscope | Federal registry | 1 |
| attenuators | Company website | 1 |
| Automated External Defibrillators (Non-Wearable) | Federal registry | 1 |
| Automated Radiological Image Processing Software | Federal registry | 1 |
