SiteCity Business Directory

Laboratory Testing

Los Angeles

184 businesses listed, showing 161–184. How we order them.

Los Angeles has 184 laboratory testing listings on this page, and a handful of ZIP codes carry more weight than the rest. Codes like 90025, 90045, 90048, 90064, 91356, and 91403 each hold 3 entries, so if you're comparing options nearby, start there rather than scrolling the whole list. Call two or three in your ZIP and ask about turnaround times and sample requirements before you commit to one.

More about laboratory testing in Los Angeles ↓

Most entries here include a phone number, with 181 of the 184 listings showing one, though fewer carry a website. Nothing on this page is labeled Sponsored, since paid placements haven't rolled out for this category, so every lab sits in the same plain format without a boosted slot pulling your eye first. If you run one of these labs and notice your own listing missing contact details, you can claim it and add what's missing, since an empty field can push a caller toward the next name on the page instead of yours.

Laboratory Testing in Los Angeles by the numbers

SiteCity lists 184 businesses under Laboratory Testing in Los Angeles, CA, as of November 4, 2026. 181 list a phone number and 158 list a website.

Most-listed ZIP codes: 91356 (9), 90048 (8) and 90015 (7).

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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