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Thirdhand Smoke Exposure for Healthy Subjects (THS05 Trial)

N/A
Waitlist Available
Led By Suzaynn F Schick, PhD
Research Sponsored by University of California, San Francisco
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Liver function (AST and ALT) in normal ranges
Aged 18-50
Timeline
Screening 3 weeks
Treatment Varies
Follow Up first void, collected for 10 days
Awards & highlights

THS05 Trial Summary

This trial looks at how skin pigment affects how nicotine is absorbed and stored by the body. Initial results suggest darker skin could mean less nicotine uptake.

Who is the study for?
This trial is for healthy adults aged 18-50 with specific skin reflectance scores, normal blood pressure, cholesterol, liver and kidney function. Smokers or those exposed to smoke are excluded, as well as individuals outside the BMI range of 18-35 or with certain medical conditions.Check my eligibility
What is being tested?
The study investigates how melanin in the skin affects absorption and retention of nicotine from clothes exposed to cigarette smoke. Participants will wear these clothes for three hours to see if more melanin means less nicotine uptake and longer retention.See study design
What are the potential side effects?
Since this is an observational study involving wearing clothing exposed to cigarette smoke rather than a drug intervention, direct side effects are not anticipated. However, there may be potential discomfort or minor skin reactions.

THS05 Trial Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
My liver tests (AST and ALT) are normal.
Select...
I am between 18 and 50 years old.

THS05 Trial Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~first void, collected for 10 days
This trial's timeline: 3 weeks for screening, Varies for treatment, and first void, collected for 10 days for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Change in blood concentrations of nicotine
Total combined urinary concentrations of the nicotine metabolites cotinine and 3-hydroxycotinine
Secondary outcome measures
Urinary concentration of the NNK metabolite NNAL

THS05 Trial Design

2Treatment groups
Experimental Treatment
Group I: Low melaninExperimental Treatment1 Intervention
Individuals with skin reflectance scores below 150 using the Mexameter 18 instrument.
Group II: High melaninExperimental Treatment1 Intervention
Individuals with skin reflectance scores above 249 using the Mexameter 18 instrument

Find a Location

Who is running the clinical trial?

University of California, San FranciscoLead Sponsor
2,503 Previous Clinical Trials
15,236,595 Total Patients Enrolled
Suzaynn F Schick, PhDPrincipal InvestigatorUniversity of California, San Francisco
1 Previous Clinical Trials
66 Total Patients Enrolled

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Who is the ideal demographic for this experiment?

"To be eligible to take part in this clinical trial, participants must possess an optimal state of health and fall between the ages 18-50. The study is currently seeking approximately 60 individuals for enrolment."

Answered by AI

Are individuals of all ages being considered for admission to this experiment?

"This trial is only open to applicants aged 18-50, with 63 studies specifically for minors and 405 for participants over 65 years old."

Answered by AI

Are there any vacancies open in this trial for participants?

"The records on clinicaltrials.gov show that this medical trial is not presently enrolling patients, despite being initially posted and updated on September 1st 2023. Nevertheless, 834 other trials are recruiting participants at the moment."

Answered by AI
~40 spots leftby Nov 2025