Testing for Diabetes lab tests in Lab Testing API Lab Test Test Cost Glucose Tolerance Test, 3 Specimens (75g) Blood Test $36.50 Hemoglobin A1c with Reflex to GlycoMark Blood Test $32.50 Cardio IQ Insulin Blood Test $35.00 C-Peptide (CPS) Blood Test - C-peptide Test $53.50 Hemoglobin A1c with eAG with Reflex to GlycoMark Blood Test $32.50 Insulin Response to Glucose, 2 Specimens $35.00 Hemoglobin A1c with CalculatedMean Plasma Glucose (MPG) Blood Test $30.00 Hemoglobin and Hematocrit Blood Test $25.00 Insulin, Free (Bioactive) Blood Test $85.00 Glucose Blood Test - Glucose Test $24.00 Fructosamine Blood Test $39.00 GlycoMark® $55.00 Insulin Blood Test - Insulin Blood Test $26.50