Is there a difference between norco and heroine on a UA?

I take Norco 10/325s and therefore I get tested pretty regularly. I can tell you that on a 10 or even 5 panel screen Norco will ALWAYS be an opiate. Heroin is the same as Morphine basically and comes up as synthetic morphine. And if it isn't supposed to be there they send it out to check it closer and will know if it's morphine or heroine. Hope this helps a little!