H & H
hemoglobin and hematocrit
HCG
human chorionic gonadotrophin
hct
hematocrit
HDL
high density lipoprotein
hgb
hemoglobin
HOB
head of bed
hr (h)
hour
HIV
human immunodeficiency virus
H&P
history and physical
HR
heart rate
hs
hour of sleep, bedtime
ht
height
Hx
history
hypo
hypodermic injection
hyst
hysterectomy