You should bring it up all you want.
Curiosity is good.
Brit, I don't know. If they were just monitoring lipase/amylase, then maybe they didn't feel a cPL was needed. But then after it came back high last time, yes, they should have done it then in theory.
This test is what we use to monitor E's pancreas. If she is having issues, this is right where I go. Not wrong to go to lipase and amylase (seeing the CBC and such is important in pancreatitis patients), but for us this is how we know there is a problem. He lipase has been high while having a normal cPL (but she also has intestinal problems).
It's not wrong of them to keep doing blood. I wonder if they ahve a lack of direction though. I'd be interesting in seeing what the plan is if the cPL is abnormal. They might have an idea yet.
Why drawing out of the leg? Why not jugular?