There was a gag order on the proceedings in North Carolina Wednesday but a report in ESPN The Magazine said Mayfield flunked the random urine test on May 1.
Mayfield filed a lawsuit against NASCAR on the grounds the positive result was caused by an unfortunate mixture of an over-the-counter allergy drug and prescription medication he takes for attention deficit hyperactivity disorder, also known as ADHD.
A Mecklenburg County Superior Court judge late last month rejected Mayfield's request for a restraining order blocking the indefinite suspension. NASCAR filed a countersuit late last week alleging breach of contract and defrauding the organization out of $150,000 in prize money.
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