related_tweet: @worldmeetjohn @dianepiette1 @byronyork fentanyl overdose had readings from 0.75 ng/ml to an astounding 113 ng/ml.the average death dose was 9.96 ng/ml." according to george floyds toxicology report, his blood contained 11.0 ng/ml fentanyl, plus 5.6 ng/ml norfentanyl, 19 ng/ml of methamphetamine"