The Doctor was looking at Owen and at Jack. He lay his head on Jack's chest. He looked very pale and was feeling miserable. He hated feeling sick. BUt he knew even if he didn't want a blood test that it was needed to find out what was wrong.
"I'll deal with it, need to find out what is wrong I guess." He coughed. "I'll just deal with it, doesn't matter who does." 
Owen looked at him "I'm sorry this needs doing but I don't know another way."