What happens when urine is taken?

Urine routine examination, if the front urine is taken, it may affect the examination results, because the front urine may include some pollutants in the urethral orifice, these pollutants will enter the urine sample, which will cause the examination results to show errors, which will mislead the patient's condition and make it difficult for clinicians to judge the accurate situation. Therefore, it is generally recommended to choose the middle stage of urine routine examination, because the middle stage of urine is the least affected, and the pollution is also the least. Urine routine examination includes many examination items, including red blood cells, white blood cells, occult blood, pus cells, urine ketone bodies, urine glucose, urine protein and other examination items. These tests can provide evidence for many diseases, including urinary system diseases, blood system diseases and endocrine system diseases.