Business Services

Independent laboratories in Fenton, MO

2 independent, locally-owned laboratories are listed in Fenton, Missouri on CheckThisBiz. National chains and franchises are not included. Ranked by how much we could independently verify (listing sources, phone, website and owner verification), the top laboratories are Calibration Lab and Services, St. Louis, MO - Transcat and Mercy Imaging and Laboratory Services - Fenton.

How we rank: email-verified customer reviews on CheckThisBiz first, then independent checks (listing sources, phone, website and domain, owner verification). Paid placement never changes this ranking. Our methods · Sources · Updated November 11, 2026

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