Effect of Testosterone Treatment on Drug Metabolism and Transport

Completed

Conditions studied: Transgender Persons

In brief

This project will evaluate the effect of gender-affirming testosterone treatment on how other medications are processed by the body.

Key facts

Study ID

NCT05116293

Run by

University of Washington

People needed

14

Starts

2021-05-01

Expected to finish

2025-12-31

Last updated by the study team

2026-05-04

Who can join

Age: 18 and older, up to 60. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Self-identified trans* adult at least 18 years of age.
• Not taking testosterone treatment currently.
• Planning to start testosterone treatment through care provider for gender-affirming medical care.

You may not qualify if…

• Unwilling/unable to return for project follow-up visits.
• Unwilling/unable to provide written informed consent.

Where it is running

• University of Washington — Seattle, Washington, United States

Full record on ClinicalTrials.gov

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