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Your seminal volume of 8 ml is good, but sperm motility at 30% is not normal. Motility of more than 60% is considered good. Patients with abnormal motility should be considered for problems like duct obstruction, varicocele and antisperm antibodies.
Please consult an infertility specialist for the examination and management. The tests like computer-aided semen analysis and antisperm antibody tests may be needed. The treatment of the specific problem can result in a successful pregnancy.Thank You.