What is the need for a semen test? Couples who have had regular sex without contraception for more than 1 year without getting pregnant need to go to the hospital for relevant tests. Since semen tests for men are convenient and non-invasive, they are the first tests to be done. In addition, men who intend to prepare for pregnancy can also check their semen, so that if there are any problems, they can be detected early and treated without delaying their preparation for pregnancy. What things should I pay attention to before coming to the hospital for semen check? 1.Lifestyle and diet Men who have a habit of smoking and drinking should quit smoking and drinking; they should not stay up late, as staying up late is extremely harmful to sperm; sperm are afraid of heat, so they should not soak in hot springs, sauna, or stay in a hot environment for too long; they should eat less high-fat, high-sugar and high-salt food, less smoked, pickled and sauced food, and eat a reasonable diet with more fruits and vegetables rich in vitamin C, such as oranges, kiwis, grapefruits, and so on, Kiwi, grapefruit, tomatoes, asparagus, etc., seafood products rich in zinc, nuts, such as walnuts, almonds, etc., rich in unsaturated fatty acids, are able to protect sperm, can eat a little in moderation. 2, abstinence time abstinence time is also to go to the semen test before how long to not room, not ejaculate, we generally recommend abstinence 2-7 days, especially abstinence 3-5 days to check the semen most accurate. If the abstinence time is too short, the density of sperm will be lower than their true level, and if the abstinence time is too long, the vitality of sperm will also be reduced. Therefore, it is important to calculate the abstinence time before coming to the hospital for examination. What things should I pay attention to when taking sperm? First of all, you should take a shower and change your underwear the night before coming to the hospital for semen examination, especially if you have a long foreskin, you should turn your foreskin over and wash it carefully. Secondly, before taking semen, wash your hands, and for men with long foreskin, turn the foreskin over to expose the glans, and ejaculate all the semen into the semen extraction cup without missing anything, especially the first half of the ejaculation, where the sperm density is high, and the absence of the first half will lead to a lower density of detection. In addition, do not touch the inner wall of the cup with your hand or penis to prevent contamination. After the semen is taken, quickly cover the lid of the sperm extraction cup and hand it over to the hospital examiner as soon as possible.