Table 1.

Laboratory evaluation of the patient

Biochemical marker	Measured value	Normal range
Serum glucose	Arrival: 42 mg/dL Postglucagon: 103 mg/dL	70–110 mg/dL (fasting)
Insulin	<2 µIU/mL	<17 µIU/mL
Proinsulin	9.7 pmol/L	<18.8 pmol/L
Beta-hydroxybutyrate	0.18 mmol/L	<0.28 mmol/L
C-peptide	2.3 ng/mL	0.8–3.1 ng/mL
IGF1	39 ng/mL	80–225 ng/mL
IGF2	498 ng/mL	267–616 ng/mL

IGF, insulin-like growth factor.