I made it more purty. Funny thing, copy-pasta. Tends to save time with grids.
Lorne, re: smoke BA, I know with tobacco smoking, authors like to cite the superhuman, subconscious ability of long-term smokers to finely titrate their draws and hand swings to precisely dose themselves what they want, different every time. I noticed study 1 they heated their pipe to over 300C, which is well beyond the point of meth decomposition anyway. Hard to absorb that burning plastic taste when you're vomiting everywhere.
Add: have they tried a reference drug in with the research drug? That's how folks usually control for huge inter-sample variation. Tough with a purer sample like meth, compared to oxidizing high-temp combustion products in whole leaf.
But if they just added 10ppm of some 3H-PEA or something of near-equal bp, they could compare the meth they measure in blood to that, for internal sample control.