Testing for Diabetes lab tests in Lab Testing API Lab Test Test Cost C-Peptide Blood Test (CPS) - C-peptide Test $68.00 Cardio IQ Insulin Blood Test $45.00 Hemoglobin and Hematocrit Blood Test $32.00 Glucose Blood Test - Glucose Test $33.00 Insulin Blood Test - Insulin Blood Test $29.00 Insulin Response to Glucose Blood Test (2 Specimens) $45.00 Hemoglobin A1c with CalculatedMean Plasma Glucose (MPG) Blood Test $38.00 Fructosamine Blood Test $50.00 Insulin, Free (Bioactive) Blood Test $108.00 Glucose Tolerance Blood Test (3 Specimens) $47.00