Firefighters' hidden danger: study tracks toxins after every blaze
NCT ID NCT05643014
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how much harmful chemicals from fire smoke get into firefighters' bodies. Researchers will collect urine and cheek cell samples from 60 firefighters before and after they fight a structural fire. The goal is to measure changes in exposure levels and understand the health risks firefighters face.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2020
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Firefighters who are exposed to fires containing carcinogens will join this study. Three sample collections will be taken to measure the biomarkers; pre-exposure, 24h post-exposure and 1 week post-exposure.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Firefighter (career or volunteer) * Over 18 years of age * Able to provide written voluntary consent Exclusion Criteria: * Unwilling to provide a pre and post-exposure urine sample * Current cancer diagnosis * Tobacco use within the last 1 year (verified by urinary TNEs)
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Masonic Cancer Center
RECRUITINGMinneapolis, Minnesota, 55455, United States
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