GA
gastric analysis
FUO
fever of unknown origin
gal
gallon
GB
gallbladder
Gc
gonococcus, gonorrhea
GH
growth hormone
GI
gastrointestinal
Gm, g
gram
gr
grain
gt, gtt, gtts
drop, drops
GTT
glucose tolerance test
GU
genitourinary
Gyn
gynecology
H
hydrogen
H2O
water
H2O2
hydrogen peroxide
H, (h), hypo
hypodermic injection
HA
hearing aid, headache
HBP
high blood pressure
HBV
hepatitis B virus
HCG
human chorionic gonadotrophin hormone
HCI
hydrochloric acid
hct
Hematocrit (% of RBC volume)
HDL
high density lipoproteins (healthy type of cholesterol)