Lakewood is part of the Denver metropolitan area, and that city has some of the highest STD rates in the country. But Lakewood’s rates are lower.
In 2016, Jefferson County had a HIV prevalence rate of 164.9 per 100K people, under Colorado’s rate of 264.2 (and a small fraction of Denver County’s rate). But there are probably people out there who don’t know they are infected, so it’s essential for every sexually active person to be tested. Treatment is available for those who turn out to be HIV-positive (and for their partners who are at risk of infection).
In 2016, Jefferson County had a chlamydia rate of 205.3 per 100K people, under half of Colorado’s rate of 468.6. The gonorrhea and (primary and secondary) syphilis rates were 47.6 and 1.4. These rates are low for Colorado, but they are going up.
AFC Urgent Care Lakewood on Alameda Pkwy provides STI testing and treatment. Jefferson County Public Health offers STD testing and treatment at their clinic on Parfet St. There are more options in nearby Golden and in Denver, and you may be able to find free STD testing there.
There’s a Planned Parenthood on Wadsworth Blvd in southwest Denver. They test for STIs and treat all except HIV, and the fee is on a sliding scale.