INS and diabetes mellitus: While those with abnormal dwAG values (dwAG2) had a mean FPG of 5.6 mmol/L which coincides with the ADA threshold for impaired fasting glucose (IFG), these two tests, nevertheless, reflect different levels of glucose homeostasis assessment because the GTT combines information from both insulin sensitivity and beta cell function [22], whereas the FPG is responsive primarily to insulin secretion relative to the level of insulin resistance [23] and is ideally suited to diabetes diagnosis as it indicates decompensated insulin resistance.