ESPN The Magazine learned Monday evening that the unidentified drug was methamphetamines. Neither NASCAR nor Mayfield is allowed to comment because of the gag order. Mayfield’s attorneys contend that it was a false positive test reading, triggered by either a mixture of the two acknowledged drugs ingested or by poorly executed testing procedures. In their lawsuit filed May 29, Mayfield’s legal team targeted Nashville-based AEGIS Sciences, the corporation contracted by NASCAR to conduct the league’s random drug screenings, which were implemented for the first time this season. AEGIS, which also is under the gag order, is not allowed to comment on specifics of methamphetamine testing as it refers to the Mayfield case, but its Web site does list two methamphetamine-specific urine-based test procedures.
Sources: Meth triggered positive test (ESPN)