Quick Question

[USCTrojan11]

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From USMLE Free 150

Why is the c-peptide low and insulin high (at the cutoffs, have to be suspicious right?) in an insulinoma of the pancreas?

 

[withrye]

They're still in reference range. I don't think it's worth it to try to see something more sinister when the numbers are near, but still within, cutoff.*

*For the boards, not real life.