I dug into this a bit and while they are doing some testing, I’m not sure they really know what they are doing.<p>When they originally flagged the NDMA issue in Zantac, they published their results. One of the tablets had 32,000 ppm of NDMA. That’s an absurdly high level that should have made them question the result.<p>Turns out they used a different testing procedure for a different set of drugs. The procedure required heating the sample to 80c for like an hour. The FDA came back and said “yeah, that’s not the right test”. Many drugs will decompose with heat and produce a bunch of impurities. Impurities that aren’t produced in the human body.<p>Testing for impurities is actually really hard as your testing procedure can have a big impact on the measurements.<p>Based on the latest FDA guidance, it sounds like Zantac does have higher than allowed NDMA levels, but nothing like what this lab suggests.<p>So I’d say they are offering a useful service, but they aren’t sophisticated enough to make a judgement call on.