Why Preventive Screenings Matter
Preventive screenings detect conditions — or the early signs of them — before symptoms appear. That early window often determines whether treatment is simpler, less invasive, and more effective. Yet many adults remain unsure which tests apply to them and when. This reference guide summarizes commonly recommended screenings across adult age groups, drawing on guidance from the U.S. Preventive Services Task Force (USPSTF), the Centers for Disease Control and Prevention (CDC), and major clinical bodies.
Individual risk factors — including family history, lifestyle, and existing conditions — can shift what's appropriate for you personally. Use this guide as a starting point, then discuss your specific screening schedule with your provider to tailor it to your needs.
| Blood Pressure Screening Starts | Age 18 (USPSTF recommendation) |
| Colorectal Cancer Screening Starts | Age 45 (average risk) (USPSTF, American Cancer Society) |
| Mammography Screening Starts | Age 40 (biennial, average risk) (USPSTF 2024 recommendation) |
| HIV Screening Recommended | Ages 15–65 (at least once) (USPSTF recommendation) |
| Lung Cancer CT Screening | Ages 50–80 with smoking history (USPSTF recommendation) |
| Osteoporosis Screening (Women) | Age 65+ (USPSTF recommendation) |
Screenings by Age Group
Ages 18–39
Young adults are often the least likely to engage with preventive care, yet several important screenings apply in this window.
- Blood pressure: Adults 18 and older should have blood pressure checked at least every 1–2 years if readings are normal. Those with elevated readings warrant more frequent checks.
- Cholesterol (lipid panel): Baseline screening is generally recommended starting in young adulthood, with frequency based on initial results and risk factors.
- Diabetes (blood glucose): USPSTF recommends screening for prediabetes and type 2 diabetes in adults ages 35–70 who have overweight or obesity. Those with additional risk factors may warrant earlier screening.
- STI screenings: Annual chlamydia and gonorrhea screening is recommended for sexually active women under 25, and for older women at increased risk. HIV screening is recommended for adults ages 15–65 at least once.
- Mental health: Screening for depression is recommended for all adults, including those in younger age brackets.
Ages 40–49
- Breast cancer: The USPSTF recommends that women at average risk begin mammography screening at age 40, with biennial screening through age 74.
- Diabetes: All adults 35–70 with overweight or obesity should be screened for prediabetes and type 2 diabetes.
- Blood pressure and cholesterol: Ongoing monitoring continues, typically annually or per provider guidance.
Ages 50–64
- Colorectal cancer: Screening is recommended starting at age 45 for average-risk adults. Options include colonoscopy, stool-based tests, and other methods — frequency varies by test type.
- Lung cancer: Annual low-dose CT scan is recommended for adults ages 50–80 with a significant smoking history who currently smoke or quit within the past 15 years.
- Osteoporosis: USPSTF recommends bone density screening for women aged 65 and older, but earlier screening may be warranted for postmenopausal women under 65 with risk factors.
Ages 65 and Older
- Osteoporosis (bone density/DEXA scan): Recommended for women 65+; providers evaluate appropriate timing for men.
- Abdominal aortic aneurysm (AAA): One-time ultrasound screening is recommended for men ages 65–75 who have ever smoked.
- Vision and hearing: Annual assessments are widely advised in older adults, though USPSTF screening recommendations vary.
- Cognitive assessment: While the USPSTF notes insufficient evidence for universal dementia screening, many providers integrate cognitive assessments into annual wellness visits for older patients.
Many of these screenings are covered without cost-sharing under U.S. insurance law. Understanding your coverage before scheduling can help you avoid unexpected costs.
Screenings That Are Frequently Overlooked
Despite clear guidelines, a number of important screenings are routinely skipped — often due to discomfort, cost concerns, or simply not knowing they apply. Understanding which tests are most commonly avoided can help readers address gaps in their own preventive care.
Vaccines are also part of a complete preventive care picture. Adults who are up to date on screenings may still have gaps in immunization. See our overview of adult vaccine schedules for more on keeping immunizations current alongside screenings.
USPSTF
The U.S. Preventive Services Task Force — an independent panel of experts that evaluates evidence and issues recommendations on preventive health services for adults and children.
Baseline screening
An initial test performed to establish a normal reference point for an individual, against which future results can be compared.
Biennial screening
A screening performed once every two years, as opposed to annually or at longer intervals.
Low-dose CT scan (LDCT)
A computed tomography imaging technique that uses lower radiation than a standard CT scan; used in lung cancer screening for high-risk individuals.
DEXA scan
Dual-energy X-ray absorptiometry — a type of bone density test used to assess risk of osteoporosis and fracture.
This article is for general informational purposes only and does not constitute medical advice. Screening recommendations vary based on individual risk factors, medical history, and evolving clinical evidence. Always consult a qualified healthcare provider to determine which screenings are appropriate for you and how often you should have them.
The content on this site is for informational purposes only and is not a substitute for professional advice. Always consult a qualified professional for guidance specific to your situation.