Couples are tested for chromosomes, usually for fertility conditions or the effects of other diseases, to find out if there are any defects in the chromosomes. The procedure is relatively simple, usually 2-3 days before the test, avoid eating too much fatty food, fast in the morning of the test, and go to the place where the blood is tested. After the blood is taken, the cells are cultured in a bottle with nutrient solution for a few days to make the cells grow, and eventually fixed measures are taken to isolate the cells and obtain the chromosomes, a process that usually takes at least a week, so it takes about two weeks to get the results after the blood is taken for the chromosome test, which is relatively long.