Laboratory pattern in early type 2 diabetes
Which laboratory pattern best fits early type 2 diabetes?
Answer C: explanation for every choice
A
Low insulin and C-peptide indicate type 1 diabetes, with β-cells destroyed.
B
Low glucose with high insulin but low C-peptide suggests injected insulin.
C
Correct. Insulin resistance leads the pancreas to secrete more insulin, measured with C-peptide, which still isn't enough to control glucose.
D
Normal glucose doesn't fit a diagnosis of diabetes.
TakeawayC-peptide marks the body's own insulin: high in early type 2, low in type 1.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb180.