Free & Low-Cost STD Testing Clinics in San Diego, CA
26 clinics in San Diego offer STD testing on a free or sliding-scale basis, so what you pay depends on your income, and 8 more within 25 miles are listed further down. 25 of them also test for HIV. Call ahead to confirm hours and what your visit will cost.
How free and low-cost care works
Most clinics here charge on a sliding scale: what you pay depends on your household income and family size, and the lowest-income patients often pay nothing. Bring a photo ID, proof of income and proof of address to get the lowest fee. How sliding-scale fees work
STD Testing clinics in San Diego, CA
-
AHF Healthcare Center - San Diego
Also tests for HIV
- Services offered
- Social Services
- Health Education/Nutrition
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- HIV/AIDS Treatment
- Sexually Transmitted Diseases (STD) Treatment
- HIV/AIDS/STD Counseling
- Hepatitis C Testing
- Medical
- Lab
- Pharmacy
- Family Planning
- X-Ray
- Languages spoken
- English, Spanish
- Fee structure
- Financial assistance available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego, for HIV/AIDS patients
-
Beach Area Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Social Services
- Primary Care
- Pediatric
- Counseling/Mental Health
- Medical
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Family Planning
- Geriatric
- Health Education/Nutrition
- Immunizations
- OB/GYN
- Physical Therapy
- Podiatry
- Chronic Kidney Disease (CKD) Screening
- Chronic Obstructive Pulmonary Disease (COPD) Screening
- COVID-19 Testing
- COVID-19 Vaccination
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
City Heights Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Social Services
- Primary Care
- Pediatric
- Medical
- Dental
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Blood Pressure Screening
- Counseling/Mental Health
- Diabetes - Treatment/Management
- Family Planning
- Geriatric
- Immunizations
- OB/GYN
- Podiatry
- Physical Therapy
- Chronic Kidney Disease (CKD) Screening
- Chronic Obstructive Pulmonary Disease (COPD) Screening
- COVID-19 Vaccination
- Hepatitis C Treatment
- HIV/AIDS Treatment
- Transportation
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
Diamond Neighborhoods Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Social Services
- Primary Care
- Pediatric
- Counseling/Mental Health
- Medical
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Substance Abuse/Addiction
- Blood Pressure Screening
- Dental
- Vision
- Diabetes - Treatment/Management
- Family Planning
- Geriatric
- Health Education/Nutrition
- Immunizations
- OB/GYN
- Physical Therapy
- Specialists
- Chronic Kidney Disease (CKD) Screening
- Chronic Obstructive Pulmonary Disease (COPD) Screening
- COVID-19 Vaccination
- Podiatry
- Transportation
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
Downtown Family Health Center at Connections (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Men's Health
- Primary Care
- Pediatric
- Counseling/Mental Health
- Medical
- Family Planning
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Geriatric
- Health Education/Nutrition
- Hepatitis C Treatment
- Podiatry
- Physical Therapy
- OB/GYN
- Immunizations
- Diabetes - Treatment/Management
- Pregnancy
- Application Assistance - Rx
- Hearing
- Vision
- Transportation
- Chronic Kidney Disease (CKD) Screening
- COVID-19 Vaccination
- Medication Assisted Treatment
- Substance Abuse/Addiction
- Telemedicine
- Languages spoken
- English
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday-Friday 8:00AM-5:00PM
- Service area
- San Diego Area
-
Elm Street Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Primary Care
- Pediatric
- Counseling/Mental Health
- Dental
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Substance Abuse/Addiction
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Family Planning
- Geriatric
- Health Education/Nutrition
- Immunizations
- OB/GYN
- Social Services
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Call for hours
- Service area
- San Diego Area
-
Family Health Center Of San Diego - Mobile Medical Unit (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Primary Care
- Pediatric
- Medical
- Family Planning
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Immunizations
- Hepatitis C Testing
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Geriatric
- Health Education/Nutrition
- Cholesterol Screening/Lipid Panel Test
- Languages spoken
- English
- Fee structure
- Sliding scale of fees based on income
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Call for hours
- Service area
- San Diego Area
-
FamilyHealth on Commerical (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Primary Care
- Pediatric
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Immunizations
- Blood Pressure Screening
- Geriatric
- Family Planning
- OB/GYN
- Pregnancy
- Hepatitis C Testing
- Hepatitis C Treatment
- Social Services
- Diabetes - Treatment/Management
- Medical
- Cholesterol Screening/Lipid Panel Test
- Chronic Kidney Disease (CKD) Screening
- Chronic Obstructive Pulmonary Disease (COPD) Screening
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale of fees based on income
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday-Friday 8:00AM-5:00PM
- Service area
- San Diego
-
Hillcrest Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Primary Care
- Counseling/Mental Health
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- HIV/AIDS Treatment
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Family Planning
- Geriatric
- Men's Health
- Hepatitis C Treatment
- Substance Abuse/Addiction
- Women's Health
- Dental
- Pediatric
- Physical Therapy
- Podiatry
- Pregnancy
- OB/GYN
- Social Services
- Immunizations
- COVID-19 Vaccination
- LGBTQ Community - Healthcare
- Medication Assisted Treatment
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale of fees based on income
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
Ibarra Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Social Services
- Primary Care
- Pediatric
- Counseling/Mental Health
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Immunizations
- Hepatitis C Testing
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Geriatric
- Family Planning
- Health Education/Nutrition
- OB/GYN
- Physical Therapy
- Podiatry
- Pregnancy
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale of fees based on income
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego
-
Logan Heights Family Health Centers of San Diego - FHCSD
Also tests for HIV
- Services offered
- Medical
- Primary Care
- Adults
- Women's Health
- Pediatric
- Geriatric
- Counseling/Mental Health
- Dental
- Endocrinology
- Hearing
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Hepatitis C Testing
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Family Planning
- Health Education/Nutrition
- Immunizations
- OB/GYN
- Physical Therapy
- Podiatry
- Urgent Care
- Vision
- Pharmacy
- Transportation
- HIV/AIDS Treatment
- COVID-19 Testing
- COVID-19 Vaccination
- Languages spoken
- English, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
North Park Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Social Services
- Primary Care
- Pediatric
- Counseling/Mental Health
- Medical
- Dental
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Diabetes - Treatment/Management
- Geriatric
- Podiatry
- Physical Therapy
- Blood Pressure Screening
- Vision
- Health Education/Nutrition
- OB/GYN
- Substance Abuse/Addiction
- Immunizations
- COVID-19 Vaccination
- Chronic Kidney Disease (CKD) Screening
- Family Planning
- Hepatitis C Treatment
- Languages spoken
- English
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
Planned Parenthood - City Heights Express Center
Also tests for HIV
- Services offered
- Women's Health
- Family Planning
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Pregnancy
- Sexually Transmitted Diseases (STD) Treatment
- Medical
- Telemedicine
- Men's Health
- HIV/AIDS/STD Counseling
- LGBTQ Community - Healthcare
- Languages spoken
- English, Others by Translation Service, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
Planned Parenthood - College Avenue Sarah Weddington Center
Also tests for HIV
- Services offered
- Women's Health
- Men's Health
- Specialists
- Medical
- Family Planning
- Pregnancy
- LGBTQ Community - Healthcare
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Immunizations
- Walk-ins Accepted
- Telemedicine
- Languages spoken
- English, Spanish, Vietnamese, Others by Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Call for hours
- Service area
- San Diego Area
-
Planned Parenthood - Euclid Avenue Francis Parker Center
Also tests for HIV
- Services offered
- Women's Health
- Men's Health
- Specialists
- Medical
- Family Planning
- Pregnancy
- LGBTQ Community - Healthcare
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Immunizations
- Walk-ins Accepted
- Languages spoken
- English, Spanish, Others By Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
Planned Parenthood - First Avenue Family Planning Michelle Wagner Center
Also tests for HIV
- Services offered
- Women's Health
- Men's Health
- Specialists
- Medical
- Family Planning
- Pregnancy
- LGBTQ Community - Healthcare
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Immunizations
- Walk-ins Accepted
- Languages spoken
- EnglishRussianSpanishVietnameseOthers By Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
Planned Parenthood - First Avenue Specialty Services Michelle Wagner Center
Also tests for HIV
- Services offered
- Family Planning
- Medical
- Health Education/Nutrition
- Adults
- Telemedicine
- HIV/AIDS Testing
- HIV/AIDS Treatment
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Women's Health
- Pregnancy
- Men's Health
- Languages spoken
- English, Others by Translation Service, Spanish
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
Planned Parenthood - Kearny Mesa Center
Also tests for HIV
- Services offered
- Women's Health
- Women's Health
- Men's Health
- Specialists
- Medical
- Family Planning
- Pregnancy
- LGBTQ Community - Healthcare
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Immunizations
- Walk-ins Accepted
- Languages spoken
- English, Spanish, Others By Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
Planned Parenthood - Mira Mesa Center
Also tests for HIV
- Services offered
- Women's Health
- Men's Health
- Specialists
- Family Planning
- Pregnancy
- LGBTQ Community - Healthcare
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Immunizations
- Walk-ins Accepted
- Languages spoken
- English, Spanish, Others by Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
Planned Parenthood - Mission Bay Parker Center
Also tests for HIV
- Services offered
- Women's Health
- Men's Health
- Specialists
- Medical
- Family Planning
- Pregnancy
- LGBTQ Community - Healthcare
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Immunizations
- Walk-ins Accepted
- Languages spoken
- English, Spanish, Others by Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; underinsured; insurance; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
San Diego American Indian Health Center
Also tests for HIV
- Services offered
- Family Medicine
- Primary Care
- Medical
- Dental
- Counseling/Mental Health
- Substance Abuse/Addiction
- Health Education/Nutrition
- HIV/AIDS Testing
- Lab
- HIV/AIDS/STD Counseling
- Diabetes - Prevention/Testing
- Diabetes - Treatment/Management
- Immunizations
- Pediatric
- Family Planning
- Women's Health
- Telemedicine
- Sexually Transmitted Diseases (STD) Testing
- Social Services
- Adults
- Languages spoken
- English
- Fee structure
- Financial assistance available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday-Friday 8:00AM-5:00PM
- Service area
- San Diego Area
-
San Diego Family Care - Linda Vista Health Care Center
- Services offered
- Primary Care
- Pharmacy
- Counseling/Mental Health
- Medical
- Health Education/Nutrition
- Family Planning
- Urgent Care
- Pregnancy
- Adults
- Vision
- Women's Health
- COVID-19 Testing
- COVID-19 Vaccination
- Visitor restrictions in place
- Telemedicine
- Specialists
- Pediatric
- Podiatry
- Immunizations
- Sexually Transmitted Diseases (STD) Testing
- Sexually Transmitted Diseases (STD) Treatment
- Languages spoken
- English, Spanish, Vietnamese, Laotian, Hmong, Tagalog, French, Russian, Others by Translation Service
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Friday
- Service area
- San Diego Area
-
San Diego Family Care - Mid-City Community Clinic - Adults
Also tests for HIV
- Services offered
- Women's Health
- Specialists
- Counseling/Mental Health
- Medical
- Health Education/Nutrition
- Family Planning
- Pregnancy
- Adults
- Diabetes - Treatment/Management
- Urgent Care
- Primary Care
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Men's Health
- COVID-19 Testing
- COVID-19 Vaccination
- Telemedicine
- Podiatry
- Diabetes - Prevention/Testing
- Sexually Transmitted Diseases (STD) Treatment
- Languages spoken
- English, French, Hmong, Spanish, Vietnamese, Laotian
- Fee structure
- Sliding scale. No one turned away due to inability to pay
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego Area
-
Sherman Heights Family Health Center (FHCSD)
Also tests for HIV
- Services offered
- Women's Health
- Primary Care
- Pediatric
- Medical
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Hepatitis C Testing
- Blood Pressure Screening
- Diabetes - Treatment/Management
- Family Planning
- Podiatry
- Physical Therapy
- Pregnancy
- OB/GYN
- Immunizations
- Application Assistance - Rx
- Telemedicine
- Transportation
- Languages spoken
- English
- Fee structure
- Sliding scale available
- Income eligibility
- All income levels accepted
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday-Friday 8:00AM-5:00PM
- Service area
- San Diego Area
-
The San Diego LGBT Community Center
Also tests for HIV
- Services offered
- Women's Health
- Counseling/Mental Health
- Health Education/Nutrition
- HIV/AIDS Testing
- Social Services
- HIV/AIDS/STD Counseling
- Telemedicine
- Geriatric
- Men's Health
- LGBTQ Community - Healthcare
- Medical
- Sexually Transmitted Diseases (STD) Testing
- Languages spoken
- English, Spanish
- Fee structure
- Financial assistance available
- Income eligibility
- Low Income
- Insurance accepted
- Uninsured; Underinsured; Insurance; Medicare; Medicaid
- Hours
- Monday - Saturday
- Service area
- San Diego, PHONE-ONLY DUE TO COVID-19
-
VA San Diego Health Care - San Diego VA Medical Center
Also tests for HIV
- Services offered
- Women's Health
- Substance Abuse/Addiction
- Social Services
- Primary Care
- Pharmacy
- OB/GYN
- Counseling/Mental Health
- Medical
- Hearing
- Health Education/Nutrition
- Family Planning
- Dental
- Sexually Transmitted Diseases (STD) Testing
- HIV/AIDS Testing
- HIV/AIDS Treatment
- Sexually Transmitted Diseases (STD) Treatment
- Adults
- Immunizations
- HIV/AIDS/STD Counseling
- Hepatitis C Testing
- Mammograms
- Telemedicine
- Transportation
- Languages spoken
- English
- Fee structure
- Sliding scale of fees based on income
- Income eligibility
- All income levels accepted
- Insurance accepted
- Call for insurance guidelines
- Hours
- By appointment only
- Service area
- San Diego area, for veterans only
STD Testing near San Diego
Other free and low-cost clinics offering STD testing within 25 miles, nearest first.
- Lemon Grove Family Health Center (FHCSD)
- San Ysidro Health - Paradise Hills
- National City Family Health Center (FHCSD)
- Grossmont Spring Valley Family Health Center (FHCSD)
- Chase Avenue Family Health Center (FHCSD)
- Chula Vista Family Health Center (FHCSD)
- Centro Medico El Cajon - Borrego Health
- La Mesa Women's Health and Wellness - Borrego Health
Frequently asked questions
- Can I get tested for STDs without insurance?
- Yes. The clinics listed here serve uninsured patients, and most charge on a sliding scale based on your household income, so testing may be free or low-cost depending on what you earn. Each listing shows the clinic's fee structure; call ahead to confirm what testing costs there.
- Do these clinics also test for HIV?
- Many do. Clinics on this page that list HIV testing among their services are marked "Also tests for HIV". If HIV testing matters to you, confirm it when you call.
- Can a teenager get tested without a parent?
- In every state and Washington, DC, minors can consent to STI testing and treatment themselves, according to the Guttmacher Institute. Eight states set a minimum age (12 or 14, for example), and some states allow or require a provider to notify parents in certain situations, such as a positive HIV test. Ask the clinic about its confidentiality policy when you call.
- What if there's no clinic close enough?
- The CDC's GetTested locator (gettested.cdc.gov) lists HIV, STD and hepatitis testing sites across the country, many of them free or low-cost. Your county health department is also worth calling: many run their own STD clinics.