All Black lock Patrick Tuipulotu is speaking publicly for the first time after being accused then cleared of using banned substances. Watch live here.
The player was provisionally suspended after returning a positive drugs test taken last year but a B sample has now showed no presence of banned substances.
The chief executive of the New Zealand Rugby Players' Association Rob Nichol said he wanted to know why there was a discrepancy between the two samples but that he accepted from time-to-time there would be collateral damage in the fight against doping in sport.
New Zealand Rugby chief executive Steve Tew said they were asking for an explanation from the testing laboratory in Salt Lake City that tested Tuipulotu's sample.
