SiteCity Business Directory

Laboratory Testing

Houston

278 businesses listed, showing 1–40. How we order them.

Houston carries 278 laboratory testing listings, too many to scroll through one by one. Narrowing by zip code first speeds things up. Zip 77054 has 24 listings, the most of any area, with 77008 next at 11 and smaller clusters in 77074, 77014, 77065, 77081, and 77092. Start near your own zip and the list shrinks fast.

More about laboratory testing in Houston ↓

Most entries here include contact info: 266 show a phone number and 232 link to a website, so you can check services before calling. None of these Houston listings are marked verified. Paid placements carry a Sponsored label, and this category has no such tag right now, so what you're looking at is a plain, unranked list. If you run a lab and the number or site link is wrong, you can claim the listing and correct it, so the next Houston patient reaches you instead of a dead end. Pick two or three near you and call.

Laboratory Testing in Houston by the numbers

SiteCity lists 278 businesses under Laboratory Testing in Houston, TX, as of November 3, 2026. 266 list a phone number and 232 list a website.

Most-listed ZIP codes: 77054 (24), 77036 (13) and 77008 (11).

Listings come from Overture Maps Foundation places data (release 2026-08-19.0, which includes Foursquare OS Places) and from businesses added or updated through SiteCity. How we count.

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