A Comparison of Exhaled Carbon Monoxide Measurements Using the iCOquit Smokerlyzer and Vitalograph Breath CO Monitor vs Carboxyhemoglobin From Venous Samples While Validating a Mobile Research Application

Exclusion Criteria

• •1. Is unhealthy or cannot participate in the study for any reason (e.g., medical, psychiatric, and/or social reason) as judged by the Investigators or designated medical staff based on all available assessments from the screening period (e.g., vital signs, physical examination, concomitant medications and medical history).
• •2. PHQ-9 score greater than 9, or a score greater than 0 on item #9 ("Thoughts you would be better off dead, or of hurting yourself in some way") at screening.
• •3. Body mass index (BMI) greater than 40.0 kg/m2
• •4. Use of any of these products in the past 30 days:
• •1. Illegal drugs (or if the urine drug screen is positive for cocaine, THC, amphetamines, methamphetamines, or opiates),
• •2. Experimental (investigational) drugs that are unknown to participant,
• •3. Chronic opioid use.
• •5. Pregnant or nursing (by self-report) or positive urine pregnancy test.
• •6. Participant enrollment numbers met.
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