American Lung Cancer Screening Initiative
Lung cancer screening can find disease earlier, when treatment has the best chance to work. We bring that opportunity closer to the people who need it.
More people screened. More lives saved.
Questions? Call 1-844-YES-LUNG.
What ALCSI does in communities
Our chapters share screening information at community events, support research, and work with public leaders on screening policy.
A national network with local roots
More than 220 high school and college chapters help neighbors understand their screening options.
Advocacy and public policy
ALCSI works with public leaders on screening resolutions, proclamations, and policies.
Research on screening access
We support research, including the INSPIRE study, focused on access and equity.
From ALCSI
All news
Governor Newsom signs ALCSI-led screening awareness bill into law
California's SB 1124 will bring lung cancer screening information to tobacco retailers across the state.
2027 ALCSI Lung Cancer Innovation Summit
Listen & learn
Survivor stories and expert voices on the ALCSI Podcast
Explore further
Explore ALCSI’s work
Most people who qualify are not getting screened
About this figure
About 1 in 5 eligible adults were screened in 2022 (18.2%), according to the American Lung Association’s 2025 report. ALCSI helps people learn about screening and take the next step.
2025 State of Lung Cancer report
Explore our impactFilms & conversations
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When to ask about lung cancer screening
A low-dose CT scan can look for lung cancer before symptoms appear. Your age, smoking history, and overall health help determine whether annual screening makes sense.
Take the eligibility surveyA healthcare professional can help weigh the benefits and possible harms of screening. These details are from the U.S. Preventive Services Task Force recommendation. The American Cancer Society guideline does not use years since quitting as a cutoff.
Lung cancer survivor
ALCSI Media, 2023
Plus One starts with a question
How Plus One works
ALCSI volunteers ask whether someone knows a person aged 50 to 80 with a smoking history who may benefit from learning about screening. The conversation can connect a friend or family member with information they did not have before.
ALCSI by the numbers
Find an ALCSI chapter
Search ALCSI’s listed school and community chapters, or browse the chapter directory.
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Our sponsors
These organizations support ALCSI’s outreach, research, events, and advocacy.
Help make early detection possible for more people
Join a chapter, volunteer in your community, or support ALCSI's work.