Urine is formed in the kidneys during blood filtration, with it the decay products formed during metabolism, salts, vitamins, hormones are excreted from the body. Based on this analysis, one can judge the work of the kidneys and other organs. The main component of urine is water (92-99%). Approximately 50-70 dry substances are removed from the body with urine every day, most of which are urea and sodium chloride. The composition of urine varies significantly even in healthy people, depending on the diet, drinking regimen and medication. During pregnancy, a regular study of a general urine test allows you to suspect in time the initial pathological processes in the body of a future mother, for example, the development of a urinary tract infection or toxicosis in the second half of pregnancy. For a correct assessment of the results of the analysis, urine must be collected correctly.