The STI (Sexually Transmitted Infection) Clinic is a joint effort of the Department of Health Services, Hackensack University Medical Center and the New Jersey Department of Health and Senior Services.  Serving clients in Northern New Jersey, the free STD clinic tests for three common infections: Gonorrhea, Syphilis and Chlamydia. Patients are welcome to walk into the testing site, located in Hackensack, NJ, on Wednesdays anytime between 4:30P.M. - 6:00P.M. In addition to being tested, patients will be counseled on the transmission and prevention of STIs.