Sperm Count : Semen is a white or grey liquid, but can occasionally appear yellowish. Pink or red semen suggests that blood is present. Although this is only rarely due to a serious health problem. Usually, each milliliter of semen contains millions of spermatozoa (sperm), but the majority of the volume consists of secretions of the glands in the male reproductive organs. The purpose of semen is purely for reproduction, as a vehicle to carry the spermatozoa into the female reproductive tract. The WHO provides a definition of a 'normal' sperm count: the concentration of spermatozoa should be at least 20 million per ml. the total volume of semen should be at least 2ml. the total number of spermatozoa in the ejaculate should be at least 40 million. at least 75 per cent of the spermatozoa should be alive (it is normal for up to 25 per cent to be dead). at least 30 per cent of the spermatozoa should be of normal shape and form. at least 25 per cent of t