The retina is located at the back of the eye and contains light-sensitive cells and nerve cells. These cells are what allow your eyes to receive and organize the information that you see, but they are susceptible to a condition called hypoxia.
Monitor the amount of insulin produced by the beta cells in the pancreas (endogenous); in this case, a C-peptide test may also be done. Insulin and C-peptide are produced by the body at the same rate as part of the conversion of proinsulin to insulin in the pancreas.
This blood test measures two types of insulin in your body: total and free. Insulin is found in your body in many forms. Bound insulin is attached to other proteins. This often occurs in people with diabetes who are treated with insulin. Free insulin is not attached to other proteins.his blood test measures two types of insulin in your body: total and free. Insulin is found in your body in many forms. Bound insulin is attached to other proteins. This often occurs in people with diabetes who are treated with insulin. Free insulin is not attached to other proteins.