Why fructose disappears from the blood of diabetic patient at a normal rate?

Fructose does not disappear from the blood of diabetic patients at a normal rate. In fact, diabetic patients often have higher levels of fructose in their blood than non-diabetic individuals. This is because people with diabetes have impaired insulin signaling, which means their cells are less able to take in glucose from the blood. Fructose is transported into cells via a mechanism that is independent of insulin signaling, so it is still able to enter cells even in diabetic patients. Additionally, fructose is metabolized slower than glucose, so it remains in the blood for a longer period of time.