A routine urine test that is all negative does not rule out STDs because there are many different kinds of STDs, and different STDs are tested differently, and there is usually no way to diagnose STDs through a routine urine test.
STDs refer to sexually transmitted diseases, including syphilis, AIDS, gonorrhea, warts, etc. Different kinds of diseases, the test method is not the same.
In the case of syphilis, blood is drawn for syphilis serology. In the case of AIDS, blood tests are also needed to check for HIV antibodies. Genital herpes is also a common sexually transmitted disease, and the diagnosis needs to be confirmed by the clinical manifestations presented by the patient, and then combined with the viral DNA test to confirm the diagnosis.
Urine routine examination can be used to check the specific gravity of urine, whether there is occult blood, whether there are white blood cells, whether there is urine sugar and protein, etc., which can help to clarify whether there is an infection of the urinary system, whether there is kidney lesions, etc..
To summarize, urine routine test out all negative does not rule out the existence of sexually transmitted diseases. If you suspect that you have a sexually transmitted disease, you should have a relevant examination under the guidance of your doctor.