Shehab-Eldin W et al. - A long prodrome of insulin resistance (IR) exists prior to development of NODAT. 50% of patients with NODAT will remit to a normoglycemic state. IR, rather than beta-cell dysfunction, precedes the development of NODAT. Serum insulin in stable non-diabetic renal transplant patients can be used as a confirmatory test to the development of future NODAT.