Preventive healthcare
Some common disease screenings include checking for hypertension ( high blood pressure ) , hyperglycemia ( high blood sugar , a risk factor for diabetes mellitus ) , hypercholesterolemia ( high blood cholesterol ) , screening for colon cancer , depression , HIV and other common types of sexually transmitted disease such as chlamydia , syphilis , and gonorrhea , mammography ( to screen for breast cancer ) , colorectal cancer screening , a Pap test ( to check for cervical cancer ) , and screening for osteoporosis . 
<triplet> chlamydia <subj> sexually transmitted disease <obj> instance of