If the percentage of normal sperm is 0, it means that the man has severe teratozoospermia and the only possible way for him to conceive would be by using IVF/ICSI.
Suggested for you: What Is Teratozoospermia? – Causes & Treatment.
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)