Letsrun claims that "Jarrion Lawsonâs [..] legal team was able to show that Christiane Ayotte, the head of the WADA-accredited doping control lab at the Institut National de la Recherche Scientifique in Laval, Quebec, lied while testifying during his case." (1)
However, the CAS decision in that case that that the article is based on reads, concerning Ayotte's testimony: the panel who heard the case was not "entirely persuaded by her evidence." "Thus, while the panel agrees (with respect) with many of the points made in the Appealed Decision, it is not prepared to rely on Professor Ayotte's evidence to the same effect found below." (2)
Letsrun claims that Ayotte lied, and you are claiming that she gave false testimony. That means that she made a false statement knowingly. Is there evidence for that? The Letsrun article's author does not himself know what Ayotte said or did not say during her testimony. John Gault, the author, wrote that "I do not have her exact statement to quote from," which means he is relying on reports of her testimony from the CAS decision. That decision does not say whether she lied or not or whether she gave false testimony or not. I am not sure if you have better, more relevant sources.(3)
Letsrun's claim that anyone "was able to show" that Ayotte "lied" seems like exaggeration, especially since Letsrun, literally, does not know what she said, and the report of what she said falls well short of indicating a lie, or even an accidentally false statement. Anyone relying on Letsrun's portrayal of her testimony is relying on sources that should be checked, in my opinion.
I myself do not know Ayotte in any way. Is she, or is her lab, beyond reproach or not? I don't know. But I have seen this claim, that she lied, a lot, and I have not seen any evidence for it.