3 ms·

As well as spices that vary with season, cocaine, etc [0] ... I'm curious as to how these tests are done. I'm guessing samples are drawn and then run through

• refurb 14y ago
  IR could never detect these compounds at that low of a level. My guess is that they are doing a extraction of water, concentrating the extracts and running a mass spec on a gas chromatographer. That's the only way you'd be able to detect stuff at the ng or pg level.