Urinalysis does not usually detect STDs. Urinalysis is a very basic clinical examination, through the urine test can be clear urine specific gravity, pH, osmolality, clear urine with or without red blood cells, white blood cells, urinary protein, glucose and ketone bodies. Urinalysis is mainly used to diagnose inflammation of the urinary system, such as acute urethritis, acute and chronic cystitis, acute and chronic pyelonephritis, etc.; auxiliary diagnosis of renal parenchymal lesions, renal tubular dysfunction. Urinalysis does not diagnose all kinds of sexually transmitted diseases. The diagnosis of sexually transmitted diseases needs to be confirmed through blood tests, pathogenic and immunological tests for sexually transmitted pathogens before a clear diagnosis can be made. Such as the diagnosis of syphilis, AIDS, need to draw blood to detect the corresponding antibodies, gonorrhea, genital herpes need to carry out secretion laboratory tests, diagnosis of warts can be histopathological examination or acetic acid white test. In short, the urine test can not find out whether there is a sexually transmitted disease, suspected of sexually transmitted diseases, as soon as possible to go to the regular hospital sexually transmitted disease department, under the guidance of the doctor to improve the examination of a clear diagnosis, after the diagnosis of active treatment.