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Study identifier: NCT07690358 Synced from ClinicalTrials.gov · July 30, 2026
● Recruiting

Concentrations of Nitrous Oxide in Blood, Exhaled Air and Urine After Various Types of Exposure.

Condition: Intoxication by Drug  ·  Sponsor: University of Aarhus

PhaseNA
Planned participants40
Who can joinAll sexes, 18 Years to 65 Years
Healthy volunteersYes

About this study

The study examines the concentrations of nitrous oxide that are achieved in blood, exhaled air, and urine after three different exposures to nitrous oxide: inhalation of three or four cartridges of nitrous oxide released in a car cabin in a switched-off car, consumption of 100 g of whipped cream in which nitrous oxide is used as a propellant, and exposure through work as a midwife in a delivery room. The concentrations in blood and exhaled air are measured for up to 1 hour after exposure, and in urine for up to 2 hours after exposure. The concentrations in blood and urine are measued with gas chromatography and mass spectrometry, while the concentration in exhaled air is measured by a sensor using an NDIR sensor (Olythe, France).

This description comes directly from the study's public registry record.

Talk to the study team

Charlotte U Andersen, Associate Professor  ·  +4560128430  ·  cua@biomed.au.dk

Always discuss trial participation with your own doctor first.

Locations (1)

Department of Forensic MedicineAarhus, DenmarkRecruiting

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Source record: clinicaltrials.gov/study/NCT07690358