Screening recommendations are among the most widely misunderstood pieces of medical guidance. Patients often assume they are static and universal; in fact, they change frequently, differ by risk group, and are the subject of considerable expert disagreement at the edges. What follows is a practical, evidence-first schedule based on current U.S. Preventive Services Task Force recommendations, with notes where guidance is contested.
The goal of a screening test is to catch disease early in people who feel well. That means every test carries the possibility of false positives, overdiagnosis, and downstream harm. Timing matters. So does knowing when to stop.
The core schedule for most adults
The following applies to average-risk adults. Personal or family history often shifts the start date earlier or the interval shorter.
- Blood pressure: every 3-5 years from age 18, annually from 40, or annually with any elevated reading.
- Lipid panel: begin in the 20s or 30s if risk factors exist; otherwise routine by 40, with cardiovascular risk assessment every 4-6 years.
- Diabetes screening (A1c or fasting glucose): from age 35 to 70 in adults with overweight or obesity, then re-evaluated based on results and risk.
- Depression and anxiety: at every preventive visit for adults; ACIP and USPSTF both endorse routine screening.
- Hepatitis C: at least once for all adults 18-79.
- HIV: at least once for adults 15-65.
- Tobacco and alcohol: at every visit, with brief counseling if positive.
Screenings specific to sex assigned at birth
Some recommendations are anatomically based rather than gender-based; adjust for surgical and hormonal history.
Cervical cancer (people with a cervix): Pap testing every 3 years from age 21, or co-testing with HPV every 5 years from age 30, through age 65 with adequate prior screening.
Breast cancer (people with breasts, at average risk): USPSTF now recommends biennial mammography starting at 40 and continuing through 74. Discuss earlier or more frequent screening if you have dense breasts, a strong family history, or a known genetic risk.
Prostate cancer (people with a prostate): a shared decision-making conversation from age 55 to 69 about PSA testing. Not a routine recommendation; the benefits and harms are closely balanced.
Abdominal aortic aneurysm (people assigned male at birth who have ever smoked): a one-time ultrasound between ages 65 and 75.
Osteoporosis: DXA scanning at 65 for postmenopausal women, earlier with risk factors; evidence in men is less settled, though a scan at 70 or with fracture history is reasonable.
Screenings that apply across sexes
Colorectal cancer: begin at 45 and continue through 75, using colonoscopy every 10 years, FIT annually, or another approved modality. Between 76 and 85, screening becomes an individual decision.
Lung cancer: annual low-dose CT for adults 50-80 with a 20 pack-year smoking history who currently smoke or quit within the past 15 years.
Skin cancer: no USPSTF recommendation for routine whole-body screening in average-risk adults, though self-examination and dermatology visits are reasonable for people with fair skin, many moles, or a family history of melanoma.
Screening is not free. The right test at the right time saves lives; the wrong test at the wrong time creates biopsies, anxiety, and cost with no benefit.
When to stop
Perhaps the most neglected part of screening is the off-ramp. USPSTF recommends stopping most cancer screenings once life expectancy falls below roughly ten years, because the harms of finding disease outweigh the benefits when treatment cannot extend meaningful life. For adults in their late 70s and 80s, the conversation with a clinician should shift from what to add to what can safely be removed.
The bottom line
A realistic screening schedule is fewer tests than most people expect, delivered at the right time, and tailored to personal risk. Print your current list, bring it to your next visit, and ask which items are due, which are not, and which you can safely stop.