l carnitine doping list BBC Panorama: Farah changed his L-Carnitine story Despite a few comments regarding the price point L-Carnitine - #1 Non Stimulant
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Science 293 , 16731677 (2001)

2016 -- Combining metabolic engineering and biocompatible chemistry for high-yield production of homo-diacetyl and homo-(S,S)-2,3-butanediol
Instead, the researchers were also unsure why the gap closed after an additional four weeks of study, but offered the explanations that the different groups may not have been eating enough to get the full benefit of their training, or, conversely, had overtrained

Individual peptide protocols are being replaced by multi-analyte approaches
