Hi,
I would like to clarify if the renal failure was present prior to the
hypoglycemia episodes. Some illnesses that affect the liver, heart, or
kidneys can cause hypoglycemia. In particular, sepsis and starvation are other causes of hypoglycemia. In these cases, treating the illness or other underlying cause will correct the hypoglycemia. Other differentials that I could think of are Insulinomas, which you have mentioned, and rarely hormonal deficiencies .