The Captains blood sample was positive for ethylalcohol with a concentration of (11 mg/dl). ????
From p. 96 of the report:
The [FAA Civil Aerospace Medical Institute] laboratory performed an independent analysis of the specimens sent by the FAA to the institute. The CAMI specimen analysis indicates the presence of ethanol in samples from the captain and first officer; however, their report states that the ethanol reported in these cases are from post-mortem ethanol formation and not from the ingestion of ethanol.