INS and Hypoglycemia: Fasting insulin level was high (190 mIU/L, reference values (RV): 5–25) on Architect i2000 (an assay recognizing insulin analogs) despite normal blood C-peptide (4.5 μg/L, RV: 0.8–5.2) and slight hypoglycemia (4.5 mmol/L, RV: 4.6–6.1).