Table 1

Kraft pattern results9 (used with permission)

Kraft patternDescription
Pattern I
Normal insulin

  • Fasting insulin ≤30 µU/mL

  • 30 min or 1-hour peak

  • 2-hour+3-hour sum <60 µU/mL

Pattern IIA
Borderline

  • Fasting insulin ≤50 µU/mL

  • 30 min or 1-hour peak

  • 2-hour+3-hour sum ≥60, <100 µU/mL

OR

  • Fasting insulin 31–50 µU/mL

  • 30 min or 1-hour peak

  • 2-hour+3-hour sum <60 µU/mL

Pattern IIB
Hyperinsulinaemia

  • Fasting insulin ≤50 µU/mL

  • 30 min or 1-hour peak

  • 2-hour+3-hour sum ≥100 µU/mL

Pattern III
Hyperinsulinaemia

  • Fasting insulin ≤50 µU/mL

  • Delayed peak (2 hours or 3 hours)

Pattern IV
Hyperinsulinaemia

  • Fasting insulin >50 µU/mL

Pattern V
Hypoinsulinaemia

  • All values ≤30 µU/mL