Is it possible to get a false negative on an STD Test?

Even though you have tested negative, you may still need to be tested again in the future. Depending on the STD, antibodies or infections have a window of time that they may not show up in your blood or urine sample. If you suspect exposure and have a negative test, it is recommended you be retested in 6 weeks. If you are leading a lifestyle that will put you in possible transmission contact with infected people, it’s suggested that you be tested routinely.