also known as Insulin in Serum or Plasma, 12 hours fasting
| # | Retailer | Lab | Seen | Price | |
|---|---|---|---|---|---|
| 1 | HealthLabscheapest seen today | — | today | $29 | order → |
| 2 | LifeExtension via Life Extension Lab Tests · seen today | Life Extension Lab Tests | today | $30 | order → |
| 3 | Walk-In Lab via LabCorp,Quest · seen today | LabCorp,Quest | today | $34 | order → |
| Glucose Test | 11 retailers | $5 |
| Insulin | 10 retailers | $4 |
| C-Peptide | 10 retailers | $18 |
| Fructosamine | 10 retailers | $11 |
| Diabetes Blood Test | 6 retailers | $13 |
| Insulin Autoantibody Test | 5 retailers | $88.95 |
| Diabetes Baseline Panel | 4 retailers | $24.97 |
| Glucose Tolerance Test, 2 Specimens | 4 retailers | $37.95 |