Overview
- World Rugby publicly confirmed on Thursday that Chris Vui received a four-year ban after a WADA‑accredited lab found elevated 19‑norandrosterone, the metabolite used to detect the steroid nandrolone, in an out‑of‑competition urine sample taken on August 1, 2023.
- Vui was provisionally suspended by World Rugby on September 27, 2023 and removed from Samoa’s Rugby World Cup squad after playing in matches against Chile and Argentina.
- The World Rugby Judicial Committee imposed the four-year ineligibility and the Court of Arbitration for Sport upheld that decision on appeal, back‑dating the start of the ban to the date of the sample.
- Vui has consistently denied knowing use, argued the result was likely caused by supplement contamination, submitted a polygraph and character evidence, but panels found his contamination and procedural complaints insufficient to overturn the positive finding.
- The sanction cost Vui his Bristol contract and paused his professional career until August 1, 2027, and it illustrates strict liability in anti-doping rules where athletes must prove accidental exposure to avoid multi‑year bans.