Those out in the late evening on October 15 will be able pick up free test kits for Chlamydia near the city centre.
The self-test Chlamydia kits will be available in Lucy Tower Street car park from 8pm to 12pm.
Test kits will be handed out by sexual health charity workers from the Terrence Higgins Trust on behalf of NHS Lincolnshire.
They hope to increase the number of 15-24-year-olds taking the test, as this is the age group most vulnerable to the STI.
Chlamydia Screening Co-ordinator Michele Presbury said: “We are always looking for new ways to make it easier for young people to get tested for Chlamydia.
“It is the most common sexually transmitted infection in under 25s and can cause serious complications, including infertility if left untreated.
“The test is so easy; males just pee in a pot and girls take a self swab. We can even text people their test results.”
“There really isn’t an excuse not to get tested,” she added.
NHS Lincolnshire also advise that if you miss the evening hand-outs, free, discreet kits are available from the Do You Have It website.
They also recommend getting regular sexual health appointments at their clinics in Lincoln County Hospital (clinic 10) or on Monks Road.