| Abbreviation | Definition |
|---|---|
| BS | blood smear |
| BS | bone scan |
| BS | bone scintigraphy |
| BS | bovine serum |
| BS | brain stem |
| BS | bronchial secretion |
| BS | Bureau of Standards |
| BSA | Basic Skills Agency |
| BSA | biotin-streptavidin |
| BSA | bismuth sulphite agar |
| BSA | bowel sounds active |
| BSA | Brief Scale for Anxiety |
| BSA | British Society of Audiology |
| BSA | British Stammering Association |
| BSA | burn surface area |
| BSA | Business Services Authority |
| BSAB | Birmingham Safeguarding Adults Board |
| BSAD | British Sports Association for the Disabled |
| BSC | Bristol stool chart |
| BSC | Business Service Centre (NHS Wales) |