Gynaecology & Obstetrics Which of the following findings characterize lower reference limits in a normal semen sample? A Volume >2ml B Sperm concentration of 40 million per mL C 30% normal sperm morphology D 32% progressive sperm motility 💡 Explanation Which of the following findings characterize lower reference limits in a normal semen sample? ✓ Correct Answer: D. 32% progressive sperm motility