HIK

Hb, HGB =hemoglobin

HBV =hepatitis B virus

HCG =human chorionic gonadotropin

HCI=hydrochloric acid

Het, crit=hematocrit

HDL=high-density lipoprotein

Hg=mercury

hecto-=hundred

hemi-=half

hemo-, hemato-=blood

hepato-=liver

hetero-=different

HIV=human immunodeficiency virus 

H2O = water 

homo-=same

HPF=high power field 

HTLV=human T-cell lymphocytic virus (AKA HIV)

He=history

hydro-=water

hyper-=too much, increased

hypo-=too little, decreased 

Hep.=Heparin

H&H=hemoglobin and hematocrit

ICU=intensive care unit 

ICC=intensive coronary care

IC=Infection Control

IBC=iron binding capacity

ID=Identification

idio-=peculiar (usually refers to unknown origin)

Ig=immunoglobulin (antibody

IM=intramuscular or infectious mononuclcosis

intra-=within

inter-=between

I&O=intake and output

-ism=condition

iso-=equal, same

-ist，-i=one who practices

-itis=inflammation

IU=international unit 

IV=intravenous

IVP=intravenous pyelogram (x-ray test using injected dye)

K=potassium

kg=kilogram

kilo-=thousand

кон=potassium hydroxide

Kvo=keep vein open

Km=kilometer