Guides · Houston · Texas · Updated September 8, 2026

Rapid STD Testing in Katy and Cypress: Walk-In Labs, Hours, and Public Clinics

Rapid STD testing in Katy and Cypress, TX: walk-in lab addresses and hours along I-10 and 290, the nearest Houston and Fort Bend County public clinics, and costs.

Rapid STD testing in Katy today

11 private walk-in lab locations in the Katy area. Order online, walk in with no appointment, about 5 minutes, results in 1 to 2 days. Individual tests from $24, 10-test panel $139. Nothing billed to insurance.

Find a Katy Lab → See all 11 locations ↓

Katy and Cypress are far enough from central Houston that driving to a city clinic is a real cost, which makes the private walk-in labs along I-10 and 290 the practical choice for rapid STD testing in Katy. This page lists every walk-in lab in Katy and Cypress with hours, plus the nearest public clinics. For the rest of the metro, see the Houston page.

The fastest option: order online, walk into a lab today

Private lab draw sites are located along the Katy Freeway (I-10) near the Katy Mills and Cinco Ranch areas, on Kingsland Boulevard and Fry Road, and along Highway 290 and Barker Cypress in Cypress. Order online, walk in with no appointment, spend about 5 minutes, and get results in 1 to 2 days in a private account. Nothing is billed to insurance and nothing goes on your medical record. Most sites open at 7 or 8 a.m. on weekdays and several open Saturday mornings. The full list is below.

Public clinic options

  • Houston Health Department, Sharpstown Health Services: 6201 Bonhomme Rd, Houston, TX 77036 (832-395-9800). STD testing and treatment on a sliding fee scale; appointments through 832-393-5427. The closest city health center to Katy.
  • Fort Bend County Health and Human Services: 4520 Reading Rd, Suite A-200, Rosenberg, TX 77471 (281-342-6414). Monday through Friday 8:00 a.m. to noon and 1:00 to 5:00 p.m.; STD treatment services by appointment. For Katy residents on the Fort Bend County side.
  • Harris County Public Health serves the unincorporated Harris County portions of Katy and Cypress; check its site for clinic locations.

Public clinic lab results take several days; rapid HIV is available at the Houston health centers.

Urgent care in Katy and Cypress

Urgent care centers are plentiful along I-10, Fry Road, and 290. Most offer STD testing with an exam. Without insurance, plan on a visit fee of $100 to $200 plus lab charges, with results in 2 to 5 days.

Texas notes

Texas allows expedited partner therapy for chlamydia and gonorrhea, and minors can consent to their own STD testing and treatment. Include syphilis in any panel; Harris County rates have risen sharply.

When to test

Chlamydia and gonorrhea at 2 weeks after exposure, HIV and syphilis at 6 weeks, herpes antibody at 12 weeks. With symptoms, test now and retest after the window.

Frequently asked questions

Where can I get same-day STD testing in Katy?

Order online and walk into any private lab draw site in Katy or Cypress the same day. No appointment, about 5 minutes, results in 1 to 2 days.

Is there a free STD clinic near Katy?

The Houston Health Department's Sharpstown Health Services at 6201 Bonhomme Rd is the closest city clinic, on a sliding fee scale by appointment (832-393-5427). Fort Bend County residents can use Fort Bend Health and Human Services in Rosenberg, also by appointment.

How much does STD testing cost in Katy without insurance?

Private lab tests are $24 to $59 each or $139 for a 10-test panel, paid directly with no visit fee.

Can I get tested on a Saturday in Katy or Cypress?

Several lab locations along I-10 and Highway 290 open Saturday mornings. Order online first and confirm the hours of the location you choose.

Walk-in testing centers in Katy

11 private lab locations in the Katy area accept walk-ins with an online order. No appointment. 4 are open on Saturday. Order first, then walk in; the staff only see a lab order.

Order & pick your location →

Katy 6 locations
Cypress 5 locations

Locations and hours are provided by the testing provider and can change. Confirm the hours shown when you order. This list covers private lab draw sites; public health clinics are listed separately above.

This page is for general information only and is not medical advice. Public clinic details are gathered from official sources and can change; confirm hours before visiting. RapidSTDTests.com is an informational referral website and may be compensated when you order testing through our links.

Part of the Houston area. Nearby areas: Sugar Land

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Get tested in Katy today

Order in minutes, walk into any of 11 local labs, and get confidential results in 1 to 2 days.

Find a Local Lab →