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 150 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
2027 ALCSI Lung Cancer Innovation Summit
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.
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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Could a low-dose CT scan be right for you?
Screening uses a quick, low-dose CT scan to look for lung cancer before symptoms appear. Age and smoking history help determine who may benefit from annual screening.
Take the surveyA healthcare professional can help weigh the benefits, limits, and possible harms of screening. The details shown here 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 full 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.