STD Testing in Diamond Bar, CA: Free, Same-Day & Confidential
In Los Angeles County, reported chlamydia runs about 22% higher than the US average. If you've had a recent risk or simply test on a regular schedule in Diamond Bar, California then clinics may bill insurance or offer sliding-scale fees, while many private labs let you pay a flat self-pay price. We list your options below.
11 testing options are listed for Diamond Bar, CA. The nearest, Quest Diagnostics, is about 2.4 miles away. Compare community and public clinics, private labs, and at-home kits below.
How to read these listings
Listings tagged Community health center are federally funded health centers and rural clinics that treat everyone regardless of insurance or ability to pay: required to bill on a sliding fee scale and provide confidential care, and in many states minors may consent to their own STI testing. A Title X tag flags centers funded for confidential family-planning services; confirm current participation when you call.
Source: CMS FQHC & Rural Health Clinic enrollment files (data.cms.gov), refreshed quarterly. Title X status reflects the latest OPA grantee list.
Premium Partner
Quest Diagnostics
Most popular Results in 1–2 days
3.5(70)?
Review sources
Google65
EasySTD5
Rated 3.5 out of 5 from 70 reviews
Address
750 North Diamond Bar Boulevard, Diamond Bar, CA 91765 2.4 miles away
Today's offer: $10 off any test panel, applied automatically at checkout.
Community health center 4.0 miles
Garfield Health Center Rowland Heights
4.1(40)?
Review sources
Google36
EasySTD4
Rated 4.1 out of 5 from 40 reviews
Garfield Health Center Rowland Heights, in Rowland Heights, anchors its STI care in a sliding-scale fee structure tied to income. Meaning cost adjusts to what patients actually earn. Walk-ins are welcome for syphilis, gonorrhea, and chlamydia screening without needing an appointment first.
Sliding-scale
Address
19138 East Walnut Drive North, Suite 202, Rowland Heights, CA 91748
BHS Mobile Health Center in Pomona welcomes walk-ins for STI screening without an appointment. Federally qualified standing backs its sliding-scale fees, so cost adjusts to income for a standard panel covering syphilis, gonorrhea, and chlamydia. All handled in a single visit.
East Valley Community Health Center in Pomona runs on a sliding-scale fee structure open to everyone, with HIV testing offered free and Medicaid, Medicare, and private insurance all accepted. Appointments are required for the full panel (rapid HIV, syphilis, gonorrhea, chlamydia, herpes, hepatitis B and C, and TB) with same-visit treatment for bacterial infections, PrEP, and all services provided at no fee.
Read full overviewShow less
Every Service Carries a Zero Balance
When cost splits a diagnosis from its follow-up, infections go unmanaged and PrEP goes unfilled. At East Valley Community Health Center, every service (testing, treatment, PrEP, vaccines, HIV care) is provided at no fee, so the visit that starts with a test ends with a complete plan, nothing deferred.
Spanish-Language Care, Not Routed Through a Phone
Many clinics handle language by patching in a remote line, which fragments a conversation that should be direct. East Valley Community Health Center delivers care in Spanish on-site, with interpretation services available for additional languages, so nothing about a patient's history, risk, or treatment gets lost in the relay.
Ryan White Funding Covers HIV From Test to Treatment
Ryan White funding at East Valley Community Health Center supports HIV care from the initial rapid test through ongoing medical treatment and medication adherence counseling, meaning a positive result doesn't reset the clock on finding a provider, it continues within the same clinic.
Tests & treatsRyan White HIV careSliding-scalePrEP
SCHG Rowland Heights Clinic, in Rowland Heights, welcomes walk-in patients for STI screening without an appointment. Backed by federal FQHC standing, it charges fees on a sliding scale tied to income. A single visit can cover syphilis, gonorrhea, and chlamydia testing.
Sliding-scale
Address
18399 Colima Road, Suite A, Rowland Heights, CA 91748
Los Angeles County Department of Public Health in Pomona delivers the full STI panel (gonorrhea, chlamydia, syphilis, herpes, rapid and conventional HIV, and TB) as a county public health operation, where every test, treatment, and prevention service carries no fee and no appointment is required.
Read full overviewShow less
Every Service Runs at Zero Cost
The no-fee structure at Los Angeles County Department of Public Health in Pomona isn't a limited program or income tier: it covers the entire visit: testing, bacterial STI treatment dispensed the same day, PrEP initiation, DoxyPEP prescribing, and all vaccines on the schedule, funded and staffed through the county public health system.
ASL-Staffed and Spanish-Speaking on Site
Los Angeles County Department of Public Health in Pomona provides care directly in American Sign Language and Spanish, with interpretation services available for additional languages: meaning providers communicate, counsel, and prescribe without a relay layer between clinician and patient during any part of the visit.
PrEP, PEP, and DoxyPEP Prescribed Without a Referral Chain
When prevention needs to be immediate, gaps in prescribing access translate directly into missed protection: Los Angeles County Department of Public Health in Pomona closes that gap by prescribing PrEP, PEP, and DoxyPEP in-house, so none of the three require an outside provider, a separate appointment, or a second clinic visit to obtain.
American Sign Language, English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
TB
Gonorrhea
Syphilis
Herpes
Chlamydia
Rapid HIV
Conventional HIV
Serves
Adolescents/Youth/Teens
American Indian or Alaska Native persons
Asian or Pacific Islander persons
Black or African American persons
Gay Men
Hispanic or Latino persons
LGBTQ
Low Income Persons
Care services
Family Planning
Mpox Vaccine
STI Treatment
Human Papillomavirus Vaccine (HPV)
Hepatitis A Vaccine
Adult Hepatitis B Vaccine
Prevention services
STI Prevention/Education
Partner Notification
HIV/AIDS Prevention/Education
HIV Test Counseling
Hepatitis Prevention/Education
Harm Reduction
Condom Distribution
Fees & payment
Free Mpox Vaccine
Medicaid Accepted
PrEP for uninsured
No Fee
Insurance Accepted
Free STI Test
Free HIV Test
Listing verified Feb 2026 · Source: CDC NPIN
Community health center 5.5 miles
Centro Medico- Holt
2.1(30)?
Review sources
Google28
EasySTD2
Rated 2.1 out of 5 from 30 reviews
Centro Medico- Holt in Pomona welcomes patients regardless of insurance status, income, or whether they have a regular provider. Federal qualification backs its sliding-scale fees, making syphilis, gonorrhea, and chlamydia screening genuinely affordable for cash-paying and low-income patients alike. No appointment is needed to get started.
Mission Blvd. in Pomona carries federal qualification that obligates it to charge on a sliding scale tied to income, making syphilis, gonorrhea, and chlamydia screening reachable for patients paying cash, between providers, or without insurance coverage.
Beyond the dedicated testing centers above: at-home kits by mail, hospital labs certified for STI testing, local clinicians who can order a panel during a regular visit, pharmacies for self-test kits and prescriptions, and online PrEP & treatment.
The nearest testing center is about 2 miles away, if you'd rather skip the trip, an at-home kit ships to Diamond Bar, you collect the sample privately, and mail it back to a CLIA-certified lab. Results come online in days, with a clinician available if anything is positive. Same labs as a clinic, no waiting room, and you can read how accurate at-home STD tests are before you order.
Want a free option first? The CDC-supported TakeMeHome program mails free at-home HIV self-test kits, and, in many areas, free STI kits, to your door, with no insurance or payment needed. The paid kits below add broader panels and faster turnaround.
In-home collection
Quest Diagnostics
$79 & up
Panel:
8-infection panel incl. chlamydia, gonorrhea, HIV, syphilis, hepatitis & herpes: single tests too
Sample:
Quest Mobile: a phlebotomist collects your sample at home
Every kit uses CLIA-certified labs. At-home testing is for screening; a reactive result should be confirmed and treated by a clinician. Prices and panels shown are illustrative and change often, confirm current details on the provider's site.
Also in the area
Other CLIA-certified labs near Diamond Bar, CA
Beyond the public testing sites above, these federally certified (CLIA) labs serve Los Angeles County, each lab's town is shown on its card below. Many test through a doctor's order or by appointment rather than walk-in, so call ahead to confirm STD/STI testing and availability before visiting.
Afmc Diamond LAB
1370 Valley Vista Drive, Suite 135, Diamond Bar, CA 91765
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Diamond Bar. A CLIA certificate records only that a laboratory is federally certified — it does not confirm the site performs STD testing, nor its hours, price or access. Inclusion is not an endorsement; always call to verify.
Local clinicians
Clinicians near Diamond Bar, CA who may help arrange STD testing
Beyond dedicated clinics, 7,074 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Diamond Bar. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 2,449 offer telehealth.
HK
Huda Khaleel, MD
Internal medicine · 1111 Grand Avenue, Diamond Bar
These are registry-listed clinicians, not dedicated STD-testing clinics. CMS records do not independently verify current licensure, testing services, availability, price, or new-patient status. Confirm each detail before booking. Source: CMS Doctors & Clinicians.
Nearby pharmacies
Pharmacies near Diamond Bar, CA
Compare the pharmacies closest to Diamond Bar, CA. Contact a location directly to confirm pharmacy-counter hours, services, prices, and product availability before visiting.
Showing the 6 closest pharmacies to Diamond Bar, CA.
Directory records identify nearby pharmacies. Service, stock, price, and hours information is shown only when supported by current location-specific evidence.
Prevention & treatment
PrEP, prevention & online treatment
Testing is one step. For residents of Diamond Bar, telehealth covers the rest: HIV-prevention medication (PrEP) and DoxyPEP to lower future risk, and discreet online treatment if a result comes back positive. All prescribed by licensed U.S. clinicians.
PrEP & DoxyPEP
Q Care Plus
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
Pricing varies by insurance and changes often, confirm on the provider's site. These services are not a substitute for emergency care.
STD stats & rates
STDs & HIV in Los Angeles County: the local picture
How reported STI rates in Los Angeles County, the county that includes Diamond Bar, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~22% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#6
#6 of 58 California counties for chlamydia, a higher rate than 90% of the state
Reported STD rates per 100,000, Los Angeles County vs California vs U.S.
Los Angeles CountyCaliforniaU.S.▲▼ = Los Angeles County vs the state average
Infection
Los Angeles County
California
United States
Chlamydia
602.358,200 cases▲ 23%
491.1
492.2
Gonorrhea
291.828,195 cases▲ 53%
190.2
179.5
Syphilis (P&S)
21.62,085 cases▲ 33%
16.3
15.8
Syphilis (early)
33.13,198 cases▲ 73%
19.1
16
Syphilis (late/unknown)
50.24,848 cases▲ 7%
46.7
29.5
Rates per 100,000 population, 2023. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis). Population figures: U.S. Census Bureau ACS. These figures are the latest available surveillance estimates. Bars are scaled to the highest rate shown.
Reading these numbers: reported case rates only count infections that were actually tested for and diagnosed, so they track local screening effort as much as true spread: a higher rate can reflect more testing, a lower one less. Either way, most STIs cause no symptoms, so treat the figures above as context rather than a verdict, and test on the CDC's schedule regardless of how your area looks.
Reported STD rates in Los Angeles County over time (per 100,000)
Chlamydia ▲ 2% vs 2022
Chlamydia Gonorrhea Syphilis (P&S)
Between 2020 and 2023 in Los Angeles County, chlamydia has risen from 529.6 to 602.3 per 100,000 (14%), gonorrhea has risen from 259.8 to 291.8 per 100,000 (12%), and P&S syphilis has fallen from 22.6 to 21.6 per 100,000 (4%).
The 2020 dip reflects reduced pandemic-era screening, not lower transmission. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis).
Community health context
What shapes testing access in and around Diamond Bar, CA
Adults uninsured
5.4%
No routine checkup
23.9%
No transportation
5.9%
Binge drinking
10.6%
Frequent mental distress
11.4%
Depression
13.4%
Below poverty line
7.7%
Primary-care ratio
1,326 : 1
Los Angeles County
Primary-care shortage score 21 / 26
Medically Underserved Area · IMU 47.9
Social Vulnerability Index · 86th percentile nationally
Sources: CDC PLACES (ZIP), County Health Rankings, CDC/ATSDR SVI, HRSA HPSA, HRSA MUA/P, Neighborhood Atlas ADI. Lower insurance coverage, fewer routine checkups, and a thin primary-care ratio all raise the value of low-cost public clinics and at-home testing in Los Angeles County.
Local HIV snapshot
HIV in Los Angeles County (2023)
Federal priority area: Los Angeles County is one of 48 U.S. counties prioritized under the Ending the HIV Epidemic initiative: targeted federal funding to expand local HIV testing, PrEP, and prevention.
People living with HIV
622 / 100k
New diagnoses (2023)
1,627cases countywide
On PrEP (coverage)
30%
Los Angeles County HIV care continuum (2023)
Los Angeles County recorded 19.6 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Los Angeles County residents living with HIV, 91.6% know their status · 72.8% are in care · 65.2% are virally suppressed. Early, routine testing is what moves these numbers: it is the entry point to PrEP, treatment, and viral suppression.
Sources: AIDSVu (Emory/Gilead) · CDC AHEAD · CDC AtlasPlus · CDC NCHHSTP AtlasPlus (county care continuum). The CDC recommends everyone aged 13–64 test for HIV at least once: every lab and clinic listed above offers HIV testing, and free rapid HIV testing is available at a local health department.
Pregnant or planning to be?Congenital syphilis is the fastest-rising STI: what to test, and when
Congenital syphilis, passed from parent to baby in pregnancy, is the fastest-rising STI in the country. U.S. cases climbed from 2,163 in 2020 to 3,882 in 2023. It is almost entirely preventable: the CDC recommends a syphilis test at the first prenatal visit, and every clinic and lab listed for Los Angeles County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Compiled and checked by EasySTD's editorial team against CDC and public-health sources. This is educational information, not a substitute for advice from a licensed clinician. Our editorial guidelines →
A trip to Sycamore Canyon Park or an errand down Grand Avenue puts you in a community where families have invested in staying put, houses occupied by the same people for decades, multigenerational roofs under which health matters belong to the individual, not the neighborhood gossip. That stability can make confidentiality feel especially necessary when seeking STI testing. The clinics and providers listed on this page understand that tension: they're accustomed to serving young adults and established residents alike, all of whom need the same reassurance that a test result stays between them and their provider, period. Diamond Bar's mix of longtime households and younger adults means testing happens quietly here, no assumption of notification, no waiting room where someone's going to recognize you from the grocery store.
Appointments can be scheduled with the expectation of genuine privacy, and results are delivered only to you. The testing sites available in and around Diamond Bar are built for exactly this: people who want to know their status without the complication of living in a place where word travels. Routine screening during your twenties and thirties, or whenever a relationship changes, is straightforward to arrange. Clinics here handle both the medical side and the practical reality that you may be managing this decision quietly, in a home where multiple generations live under one roof or among neighbors you've known for years.
Getting there
How residents reach STD testing in Diamond Bar, CA
Walkability12.13 / 20 · Above average
Diamond Bar scores 12.13/20 on the EPA walkability index, so many trips are walkable or a short ride, though a car still gives you the widest choice of testing centers.
Source: EPA National Walkability Index 2021.
ZIP 91765 snapshot
Residents
44,779
Median age
45.7
Median income
$104,737
ZIP-level Census figures for the wider 91765 area around Diamond Bar: a single ZIP can span several communities, so they describe the area, not Diamond Bar alone.
Diamond Bar sits in Los Angeles County, ZIP 91765. Local context that shapes where residents test:
Local landmarks
Sycamore Canyon Park
Maple Hill Park
Summitridge Park
Heritage Park
Snow Creek Park
Suzanne Park
Neighborhoods & communities
Walnut
Chino Hills
Major routes
Grand Avenue
Golden Springs Drive
North Grand Avenue
CA 60 (Pomona Freeway)
Nearby cities & towns
STD testing near Diamond Bar, CA
Just outside Diamond Bar? These nearby communities have their own testing guides: clinics, at-home kits, and free screening close to home.
STD testing in Diamond Bar, CA: screening, costs & privacy
Everything to know before you test in Los Angeles County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under California law. If you have symptoms right now, our confidential symptom checker maps them to the tests worth considering.
Who should test, and whenCDC screening schedule + each infection's detection window
Who should get tested, and how often
Based on current CDC screening recommendations.
Group
Tests
How often
Everyone aged 13–64
HIV
At least once
Sexually active women under 25
Chlamydia, gonorrhea
Every year
Women 25+ with new or multiple partners
Chlamydia, gonorrhea
Every year
Pregnant people
HIV, syphilis, hepatitis B & C, chlamydia
Early in pregnancy
Gay & bisexual men (MSM)
Chlamydia, gonorrhea, syphilis, HIV
Every 3–6 months
Anyone who shares injection equipment
HIV, hepatitis B & C
At least yearly
All adults at least once
Hepatitis C
At least once
When to test: STD detection windows
Testing too early can return a false negative, confirm timing with a Diamond Bar-area provider.
What each STD test costsMedicare reference prices per lab test, a benchmark before you pay out of pocket
These are the federal Medicare reference prices for processing each lab test. Public clinics and the community health centers serving Diamond Bar often test free or on a sliding scale; private labs and at-home kits bundle several tests into one fee. Use this as a per-test benchmark before you pay out of pocket, or see the full guide to STD test costs for insurance, free, and at-home options.
Test
Reference price
CPT / HCPCS
Chlamydia (NAAT)
$47.80
87491
Gonorrhea (NAAT)
$47.80
87591
Trichomoniasis (NAAT)
$47.76
87661
HIV-1/2 antigen/antibody
$26.87
87389
HIV-1/2 antibody
$22.44
86703
Syphilis (RPR/VDRL)
$5.61
86592
Syphilis (treponemal antibody)
$17.49
86780
Herpes (HSV NAAT)
$47.76
87529
Hepatitis B surface antigen
$15.33
87340
Hepatitis C antibody
$29.16
86803
Source: Medicare Clinical Laboratory Fee Schedule, CMS, 2025 rates (data.cms.gov). Reference rate for the lab assay only: a clinic visit, sample collection, or a bundled multi-test panel may cost more. Medicaid and most insurers cover STD screening at no out-of-pocket cost.
Confidentiality & consent in CaliforniaMinor consent and partner treatment (EPT) under state law, plus how to test privately
Two things that actually depend on California law: who can consent, and whether partners can be treated without their own visit. Everything else about testing privately is the same nationwide (see below).
Can a minor consent on their own?
In California, a minor aged 12 or older can consent to confidential STI testing and treatment on their own, no parental permission is required.
Can my partner be treated too? (EPT)
California permits Expedited Partner Therapy (EPT): if you test positive for chlamydia or gonorrhea, your provider can give you medication (or a prescription) to pass to your partner, no separate exam or appointment needed for them.
Keeping a test private works the same in every state. Whether an STD test shows on insurance (the EOB), how to test anonymously, and self-pay options that leave no insurance trail don’t change by location.
