Anonymous
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Anonymous
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I was just wondering who people thought were the top 10 largest labs for drug testing. There are so many out there now that I would love to hear different opinions.
Quest and Labcorp are the two biggest. Medtox was number 3 but is now part of Labcorp. CRL IS up there, along with Alere. Redwood Toxicology isn't SAMHSA certified but isn't SAMHSA Certified. For hair, Omega, psych medics and usdtl are big.