Home › Infertility › NCT06941922

Testicular Evaluation of Azoospermia Using Micro-Ultrasound

Who can join

Ages 18 and older · Men · Healthy volunteers welcome

Inclusion criteria:

1. Men with azoospermia confirmed based on semen analysis
2. Post-vasectomy patients with verified azoospermia after the procedure
3. Men pre-vasectomy with proven natural fertility or with normal semen analysis
4. Males assigned at birth over the age of 18

Exclusion criteria:

1. History of prior microdissection of the testes
2. History of hypogonadotropic hypogonadism

About the study

The investigation is a small feasibility study to determine whether there are imaging features related to the seminiferous tubules in the testes under microultrasound. The results from this study will provide guidance on the design and power analysis of future studies in this area.

Sponsor: Paul Shin · Participants: 40 · Started: May 1, 2025

Contact the study team

• Paul R Shin, MD · Phone: 202-296-2595
• Cori Tanrikut, MD · Phone: (202)296-2595

Official record on ClinicalTrials.gov — NCT06941922

Locations in the U.S.

Conditions

• Infertility

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.