# Breath Carbon Monoxide and Cotinine as Biomarkers to Distinguish Smokers From Nonsmokers

> **NCT01031121** · — · COMPLETED · sponsor: **National Institute on Drug Abuse (NIDA)** · enrollment: 240 (estimated)

## Conditions studied

- Nicotine Dependence

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01031121
- **Lead sponsor:** National Institute on Drug Abuse (NIDA)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2009-06-08
- **Primary completion:** —
- **Final completion:** 2010-10-22
- **Target enrollment:** 240 (ESTIMATED)
- **Last updated:** 2017-07-02


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01031121

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01031121, "Breath Carbon Monoxide and Cotinine as Biomarkers to Distinguish Smokers From Nonsmokers". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT01031121. Licensed CC0.

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