Top level sources have told Sportsmail that the 23-year-old American sprinter, who was given a seven-figure sponsorship deal by Nike in 2017 after emerging as the successor to Usain Bolt, is disputing one of three whereabouts failures in the last 12 months.
"It is understood there are high level ongoing discussions between WADA, USADA and the IAAF's Athletics Integrity Unit about the case, with Coleman's own legal team disputing at least one of the alleged whereabouts violations.
"There appears to be an issue because while all tests fall under WADA's Anti-Doping Administration Management System, at least two different testing bodies are thought to be involved."
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The BBC has also reported that Coleman is now under investigation over the missed tests and has approached the athlete for comment.
It confirms that neither the IAAF, the World Anti-Doping Agency, the US Anti-Doping Agency nor the Athletics Integrity Unit has commented on the situation.
As part of the 'whereabouts' system, athletes must inform officials where they will be for one hour every day in addition to providing details of overnight accommodation and training.