BE
barium enema
BUN
blood urea nitrogen
BS
blood sugar
Bib.
Drink
BP
blood pressure
b.i.d.;BID
twice a day
bihor
during two hours
bilat
bilateral
bucc.
Inside cheek; buccal
BCP
Birth Control pills
BM
Bowel Movement
BMI
Body Mass Index
bol
Bolus
BSA
Body Surface Area