The Preventive Health Screenings Every Adult Should Know About

Why preventive screenings matter

Preventive health screenings are tests that look for disease or risk factors before symptoms appear. Many serious conditions, including high blood pressure, type 2 diabetes, and certain cancers, develop quietly for years. Catching them early generally gives clinicians more treatment options and gives patients better outcomes.

Most screenings recommended for healthy adults are covered without cost-sharing under the Affordable Care Act when performed by an in-network provider, though coverage details vary by plan. If cost or access has kept you from scheduling these tests, that is worth raising directly with your doctor or insurer.

This article is general health information only. A qualified healthcare provider can tell you which screenings apply to your age, sex, family history, and current health.

Core screenings most adults need

The following tests appear on guidelines published by major clinical bodies such as the U.S. Preventive Services Task Force (USPSTF). Frequency recommendations below reflect broad guidance; your provider may advise differently based on your individual risk.

Blood pressure

High blood pressure (hypertension) has no reliable symptoms. Adults 18 and older should have blood pressure checked at least every two years if readings are normal (below 120/80 mmHg). More frequent checks are advised if readings are elevated.

Cholesterol and lipid panel

A fasting or non-fasting blood draw measures LDL, HDL, and total cholesterol. Most guidelines suggest adults begin screening in their 20s, with frequency determined by results and cardiovascular risk factors such as smoking or family history.

Blood glucose and diabetes screening

The USPSTF recommends screening adults aged 35 to 70 who have overweight or obesity for prediabetes and type 2 diabetes. A simple fasting blood glucose test or an HbA1c test (which reflects average blood sugar over roughly three months) is typically used.

Colorectal cancer screening

Colorectal cancer is one of the most preventable cancers when caught early. Current USPSTF guidance recommends screening starting at age 45 for average-risk adults. Options range from a stool-based test done at home every one to three years to a colonoscopy every ten years.

Cervical cancer screening

Adults with a cervix should have a Pap test every three years starting at age 21, or a Pap test combined with HPV testing every five years from age 30 to 65. Your provider can explain how these options differ.

Breast cancer screening

Mammography guidelines vary slightly across organizations, but many recommend adults with breasts begin annual or biennial mammograms between ages 40 and 50. Family history or genetic factors may shift the starting age earlier; discuss your personal risk with your doctor.

Lung cancer screening

Low-dose CT (computed tomography) scans of the chest are recommended annually for adults aged 50 to 80 with a significant smoking history (currently smoking or quit within the past 15 years) who meet specific pack-year criteria. This screening is not recommended for adults without those risk factors.

Screenings based on specific risk factors

Not every test belongs on every adult's schedule. Some screenings are recommended only when a person has particular risk factors.

• Abdominal aortic aneurysm (AAA): A one-time ultrasound is recommended for men aged 65 to 75 who have smoked at least 100 cigarettes in their lifetime.
• Osteoporosis: Bone density screening (DEXA scan) is recommended for women 65 and older, and for younger postmenopausal adults with elevated fracture risk.
• HIV: The USPSTF recommends HIV screening for all adults aged 15 to 65 at least once, and more frequently for those at higher risk.
• Hepatitis C: Adults born between 1945 and 1965 have a higher prevalence of hepatitis C and should be tested at least once. Adults at ongoing risk may need periodic retesting.
• Sexually transmitted infections: Screening for chlamydia, gonorrhea, and syphilis is recommended based on age, sexual behavior, and other risk factors. A conversation with your provider determines what applies to you.

See how screening recommendations shift across decades of adult life in our decade-by-decade reference guide. For information specific to men's health, the preventive care guide for men covers checks that often go overlooked.

Your lifestyle habits influence which screenings you may need and how your results are interpreted, so that context matters when you talk with your provider.

Getting the most from your screening appointments

Arrive at appointments with a list of your current medications, supplements, and any symptoms you have noticed. Bring family history information if you have it, including conditions affecting first-degree relatives and the age of diagnosis. Fasting requirements vary by test, so ask ahead of time.

If a result falls outside the normal range, that does not automatically mean a diagnosis. Follow-up testing, specialist referral, or lifestyle change may be the next step. Ask your provider to explain what an abnormal result means in your specific case, what the next steps are, and what timeframe you are working within.

Adults who have not had a primary care provider should contact their state or local health department, a Federally Qualified Health Center (FQHC), or their insurance carrier's member services line to find one. Many FQHCs offer care on a sliding-fee scale.

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about any health concerns or before making decisions about your care.