C-Peptide, Serum (Fasting) Test

This test measures C-peptide levels, which are released when insulin is produced by the pancreas. It helps differentiate between type 1 and type 2 diabetes, assessing insulin production. High C-peptide levels may indicate insulin resistance, while low levels may suggest type 1 diabetes. Symptoms associated with diabetes vary widely, including polyuria (increased urination) and polydipsia (increased thirst).