I read both carefully and the "independant" autopsy showed "non toxic levels" of both substances in the blood. The report actually said the drugs were NOT the cause of death, but rather asphyxiation defined as "lack of oxygen to the brain" as the cause.
"The independent examiners found that weight on Floyd's back, the handcuffs and the positioning were contributory factors because they impaired the ability of Floyd's diaphragm to function. The report concluded that Floyd, 46, died at the scene. "
"Later Monday, the Hennepin County Medical Examiner's office released its initial findings of their autopsy and also declared Floyd's death was a homicide caused by "a cardiopulmonary arrest whilebeing restrained by law enforcement officer(s)." that was the "corrected" autopsy.