Editing Formaldehyde (section)

=== Other routes ===
In humans, ingestion of as little as {{Convert|30|ml|USfloz}} of 37% formaldehyde solution can cause death. Other symptoms associated with ingesting such a solution include gastrointestinal damage (vomiting, abdominal pain), and systematic damage (dizziness).<ref name="cdc1" /> Testing for formaldehyde is by blood and/or urine by [[gas chromatography–mass spectrometry]]. Other methods to detect formaldehyde include infrared detection, gas detector tubes, gas detectors using electrochemical sensors,  and [[high-performance liquid chromatography]] (HPLC). HPLC is the most sensitive.<ref>{{cite web |last=Ngwa |first=Moise |date=2010-10-25 |title=formaldehyde testing |url=http://monographs.iarc.fr/ENG/Monographs/vol88/mono88-6A.pdf |url-status=dead |archive-url=https://web.archive.org/web/20181025071150/https://monographs.iarc.fr/wp-content/uploads/2018/06/mono88-6A.pdf |archive-date=2018-10-25 |access-date=2012-05-19 |work=[[Cedar Rapids Gazette]]}}</ref>

The fifteenth edition (2021) of the U.S. National Toxicology Program  Report on Carcinogens notes that currently in the U.S. “The general population can be exposed to formaldehyde primarily from breathing indoor or outdoor air, from tobacco smoke, from use of cosmetic products containing formaldehyde, and, to a more limited extent, from ingestion of food and water.”  Affected water includes groundwater, surface water, and bottled water.  It also notes that occupational exposure can be significant.  <ref>https://ntp.niehs.nih.gov/sites/default/files/ntp/roc/content/profiles/formaldehyde.pdf</ref>