Find STD Testing in Snohomish WA. There are numerous STD Testing Clinics in Snohomish, Washington. STD Testing Clinics do HIV testing, Chlamydia Testing, Syphilis Testing, Gonorrhea Testing and more. STD reporting in Snohomish County. The Snohomish Health District’s goal is to prevent future illness for you and the spread of STDs to others. Doctors, hospitals and labs are required by law to report certain STDs. Find HIV / AIDS Clients Treatment Centers in Snohomish County, Washington, get help from Snohomish County HIV / AIDS Clients Rehab for HIV / AIDS Clients Treatment in Snohomish County.