Gastric inhibitory polypeptide in newly diagnosed ketotic type I (insulin-dependent) diabetics.

Plasma concentrations of 5,000 daltons (5 kDa) immunoreactive gastric inhibitory polypeptide (IR-GIP) were measured before and up to 16 hours after the start of low-dose insulin treatment in newly diagnosed ketotic type I (insulin-dependent) diabetics. Nine patients were non-fasting. Before insulin treatment mean IR-GIP was 31 +/- 6 pmol/l (range 9-65 pmol/l).