Question

which is the following test is used to monitor diabetic patients who are secretly taking insulin?
a) glucose tolerance test
b) fasting glucose
c) c - peptide
d) hgba1c

Explanation:

C - peptide is co - secreted with insulin from the pancreas. When patients take exogenous insulin, the body's own insulin production and thus C - peptide levels can be evaluated. Glucose tolerance test measures body's response to a glucose load, fasting glucose is a measure of blood glucose after fasting, and HbA1c reflects average blood glucose over 2 - 3 months, none of which specifically monitor endogenous insulin production in the context of exogenous insulin use.

Answer:

C. C - peptide