The main and only way to check chromosomes is by chromosome analysis. The main purpose of testing chromosomes is to detect chromosomal abnormalities, thus helping to diagnose hereditary diseases, some congenital defects and certain diseases of the blood and lymphatic system. This test is usually done at the onset of the disease and during early fetal screening. During the treatment of male diseases. Chromosomal examination is mainly karyotype analysis and Y chromosome microdeletion detection, which is used for the diagnosis of male infertility, sexual organ dysplasia and other diseases. Chromosome analysis is done with the help of some instruments to observe whether there is a problem with the number of chromosome morphology and then to identify the problems that will be caused according to the arrangement of chromosomes. This method can avoid the birth of some children with congenital diseases and can also identify solutions for the treatment of diseases. There is only one method of examining chromosomes, and that is chromosome analysis, which analyzes a blood sample taken from a vein in the arm or a sample of amniotic fluid or chorionic villi from a pregnant woman or a sample of bone marrow or tissue. In these samples the presence of chromosomes can be observed with the help of an instrument, which is now well established and is also a way to find the cause of the disease. There is only one way to check for chromosomes, and you can ask your doctor if it is necessary to do so before proceeding. It is also a way to find out the cause of your disease.