If they are prescription then having them on testing should not be a problem so I was assuming they are illegal.
I have never personally heard about increased half life except with liver dysfunction of cirrhosis. A person with cirrhosis really needs to not take anything unless they absolutely have no choice as the injured liver must process all chemicals.
My apologies for being glib I guess I was having a bad day and took it out on you.
The only comment you got wasn't helpful. It was mean. Some people need opiates for pain and they are not all illegal! It's a touchy subject right now & lots of people don't understand. I don't know the answer to your problem but don't let mean people stop you from continuing.
Don't take illegal opiates them you won't have this concern