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Table 1 Laboratory tests confirming non-ketotic hypoinsulinemic hypoglycemia by IGF2 production

From: Seborrheic keratoses and severe hypoinsulinemic hypoglycemia associated with insulin grow factor 2 secretion by a malignant solitary fibrous tumor

Test Result Cut-off
Morning cortisol (nmol/L) 259.34 171.05–535.24
Potassium (mmol/L) 4.2 3.5–5.0
Glucose (mmol/l) 2.22 3.88–5.49
Thyrotropin (mU/L) 3.07 0.27–4.2
Free T4 thyroxine (nmol/L) 0.013 0.011–0.021
Insulin (pmol/L) in hypoglycemia (2.22 mmol/L) <1.2 <18
Pro-insulin (pmol/L) in hypoglycemia (2.22 mmol/L) 1.56 <9.4
C Peptide (nmol/L) in hypoglycemia (2.22 mmol/L) 0.032 <0.198
β-hidroxybutyrate (µmol/L) <9.98 <429.91
Cortisol (nmol/L) in hypoglycemia (1.6 mmol/L) 427.64 >496.62
GH (μg/L) 0.09 ≤2.47
IGF-1 (μg/L) 32 55–166
IGF-2 (μg/L) 594 288–736
IGF-2/IGF-1 ratio 18.56 Up to 3