| Abbreviation | Definition |
|---|---|
| BFO | Balanced Forearm Orthosis |
| BFO | Blood-Forming Organs |
| BFP | Big Fat Positive |
| BFP | Biological False Positive |
| BFP | Body Fat Percentage |
| BG | Bone Graft |
| BGL | Blood Garlic Level |
| BGS | Balance, gate, station |
| BGTT | Borderline glucose tolerance test |
| BH | Bad Heal |
| B-HCG | beta-human chorionic gonadotrophic hormone |
| BHM | Big Hairy Mole |
| BHO | Bad Hair Odor |
| BHP | Benign Hypertrophic Prostate |
| BHRE | Back Hand Reactive Exertion |
| BHS | Beta Hemolytic Streptococcus |
| BHT | Blunt Head Trauma |
| BI | Baroclinic Instability |
| BI | Brain Injury |
| BIA | Bioelectrical Impedance Analysis |