Open 7 days · Mon–Fri 9–6 · Sat–Sun 9–5

STD testing for Darien, IL, a straight drive up Cass Avenue

If you live in Darien, IL, STD testing is a straight drive north on Cass Avenue to Urgent Care Center of Westmont, about 3.1 miles away in Westmont, IL. Walk in seven days a week, give samples on site in a private room, and pay self-pay from $125 if you prefer.

  • Darien is about 3.1 miles south of our clinic
  • Open 7 days
  • Walk-ins welcome
A man and a female clinician in navy scrubs talk quietly in a private consult room
4.9

3,166+ Google reviews

Key facts

  • Cass Avenue runs from Darien, IL straight into Westmont, IL, and the main clinic at 29 N Cass Ave is the first one you reach.
  • About 7.4% of Darien, IL residents have no health insurance (U.S. Census Bureau estimate). A self-pay visit starts at $125.
  • MedlinePlus notes that many STIs cause mild symptoms or none, so a person can have an infection and pass it on without knowing.
  • Darien, IL is in DuPage County, whose health department runs a confidential STD clinic at its Wheaton office.

Private STD Testing for Darien, IL

Part of our care for Darien, IL. Full details on our private std testing page.

Cass Avenue: the simplest route from Darien, IL

Darien, IL (ZIP 60561) sits about 3.1 miles south of our main clinic in a straight line. Drive north on Cass Avenue from anywhere in town, or exit I-55 at Cass Avenue and head north. Stay on Cass into downtown Westmont, IL. Urgent Care Center of Westmont is at 29 N Cass Ave, Ste A, just north of the railroad tracks.

That is the clinic you can reserve with online check-in. If you keep going north to Ogden Avenue, our second clinic, Immediate Care Center of Westmont Inside Jewel-Osco at 4 E Ogden Ave, also collects lab samples; its direct line is (630) 541-6113. From the east side of Darien, Route 83 north to Ogden Avenue and then west reaches the Jewel-Osco clinic first.

A young man drives along a wide tree-lined avenue with the window slightly down

Testing without insurance: what Darien, IL residents should know

Census Bureau estimates show about 7.4% of Darien, IL residents have no health insurance. Not having a plan should not keep you from getting tested.

  1. Check the base priceA general self-pay visit starts at $125. See our self-pay services.
  2. Ask before tests are orderedLab tests can add to the cost. The front desk or your clinician can tell you what each one costs so you can decide.
  3. Request an estimatePeople not using insurance can ask for a Good Faith Estimate of expected charges.
  4. Say so at check-inTell the desk you are paying on your own so the visit is set up that way from the start.
A young man sits on a park bench with headphones, looking at his phone

What to expect in the exam room

Read moreClose
A clinician in navy scrubs speaks softly with a young woman in a bright private exam room

Urgent Care Center of Westmont, also known as Immediate Care Center of Westmont, is led by board-certified physicians, and our team does not judge. Your clinician will ask direct questions about partners and the kinds of sex you have had. Honest answers help pick the right tests:

  • A urine sample, often used for chlamydia and gonorrhea.
  • A blood draw for HIV, syphilis and hepatitis.
  • A swab of the throat or rectum after oral or anal sex, or of a sore if one is present.

All of it is collected at the clinic, during your visit, in a private room. We do not use take-home or self-swab kits. When results are ready, a clinician explains them to you directly.

Who should get tested, according to the CDC

Read moreClose
A stethoscope, blank clipboard and sealed specimen cup on a clean clinic desk
  • Everyone 13 to 64: at least one HIV test.
  • Most sexually active adults: syphilis testing, depending on where they live.
  • Sexually active women under 25: chlamydia and gonorrhea every year.
  • Gay, bisexual and other men who have sex with men: syphilis, chlamydia and gonorrhea at least once a year.
  • Pregnant people: syphilis, HIV, hepatitis B and hepatitis C early in pregnancy.
  • Anyone with a partner who has an STI, or with new symptoms such as discharge or sores.

About 1 in 4 Darien, IL residents is 65 or older, so it is worth saying plainly: these guidelines are about sexual activity, not age. Read how often to get a full STD panel.

A public option in DuPage County

Read moreClose
A woman works at a library table with a laptop and notebook

Darien, IL is in DuPage County, in Downers Grove Township. The DuPage County Health Department runs a confidential STD clinic at its Wheaton office, with testing and treatment for chlamydia, gonorrhea and syphilis, plus HIV testing and PrEP. It serves people 12 and older, and appointments are preferred. Our Westmont, IL clinics take walk-ins, including on Saturdays and Sundays.

Either route leads to the same goal. Some people want a weekend walk-in visit close to home; others prefer a county clinic. What matters is that you get tested and talk with a clinician about the results.

Insurance plans and next steps for Darien, IL patients

Read moreClose
A woman walks out of a clinic door into sunlight with a calm smile

If you have coverage, we accept Blue Cross Blue Shield (PPO), BCBS Advocate Good Samaritan (HMO), BCBS Medicaid Community, Cigna, Humana, UnitedHealthcare, Medicare, Meridian, CountyCare, Multiplan/PHCS, ACPN, USAMCO and State of Illinois Benefit Plans. Call (630) 324-6825 to confirm, or see cost and insurance.

After testing, the CDC advises treating partners at the same time when an infection is found, and retesting about three months after treatment for chlamydia or gonorrhea. Other Darien, IL pages: lab testing, X-ray, the Darien, IL area page and our STD testing service. Neighbors: Woodridge, IL STD testing and Willowbrook, IL STD testing.

More care for Darien, IL

Private STD Testing for nearby towns

Common questions

How do I get from Darien, IL to your STD testing clinic?

Drive north on Cass Avenue, or exit I-55 at Cass Avenue and head north. Stay on Cass into downtown Westmont, IL. The main clinic at 29 N Cass Ave is about 3.1 miles north of central Darien in a straight line, and parking is free.

Can I be tested if I have no insurance?

Yes. Self-pay patients are welcome at both clinics. A general visit starts at $125, and you can ask what each lab test costs before it is ordered. If you are not using insurance, you can also ask for a Good Faith Estimate of expected charges.

What samples will I need to give?

It depends on the tests. Chlamydia and gonorrhea are often checked with urine, HIV and syphilis with blood, and some infections with a swab. Every sample is collected at the clinic in a private room. You will not be asked to swab yourself at home.

How do I bring up STD testing with a clinician?

Simply say you would like to be tested. You do not need a reason or symptoms. Our guide on how to ask for an STD panel has wording that may help if you feel nervous.

Does a negative test mean I am in the clear?

Not always. Each test has a window period after exposure before it can detect an infection. The CDC lists 23 to 90 days for HIV antibody tests. If you were tested soon after a new partner or a possible exposure, your clinician may recommend a repeat test later.

Is my STD test confidential?

Yes. Your answers and results are private medical information, protected under federal law. A clinician reviews results with you directly. If you use insurance, the policyholder may see a statement for the visit, so some people choose self-pay.

Sources

  1. CDC: Getting Tested for STIs
  2. MedlinePlus: Sexually Transmitted Infections
  3. CDC: About Chlamydia
  4. CDC: About Gonorrhea
  5. DuPage County Health Department: Sexually Transmitted Disease (STD) Clinic
  6. CMS: What is a good faith health insurance estimate?
  7. CDC: Getting Tested for HIV
4.9

What patients say

from 3,166+ Google reviews
★★★★★
“Very courteous and professional. I felt like I was in good hands and they answered all my questions.”
Jamie W. · May 2026 · Google
★★★★★
“So nice to be treated like a person instead of a number. I wish Kelly could be my PCP”
Dave K. · March 2026 · Google
★★★★★
“Everyone is very professional . Friendly and truly considered about my health. I go there anytime I am not feeling good. Always a good experience .”
Andy L. · December 2025 · Google

Read all reviews on Google

Feeling sick or hurt? We can see you today.

Book online in about a minute, or just walk in. Open 7 days in Westmont, IL.

Which clinic?

Both are in Westmont, IL and open 7 days. X-ray is only at the main clinic.

Main clinic29 N Cass Ave, Ste A, Westmont, ILX-ray and lab · online bookingInside Jewel-Osco4 E Ogden Ave, Westmont, ILWalk-in care and lab collection · no X-ray