Baxter had provided a urine sample immediately after the race on 23 February. Initial reports were that his urine sample contained a trace amount of methamphetamine, a banned stimulant. The BOA formally asked the IOC to carry out a split test on Baxter's sample on the basis that there are two forms of the drug.
The initial findings indicated that Baxter's urine contained a small amount of methamphetamine, which is prohibited in sports. The BOA requested an additional test to confirm the presence of the banned substance and differentiate between its two forms.