Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Model schematic. Blue shading indicates no opioid use disorder. Red shading indicates opioid use disorder (either SOUD or SHUD). Yellow border indicates prescription holders. Rx = prescription; SHUD = severe heroin use disorder; SOUD = severe opioid use disorder.
