Choose the type of

diabetes mellitus:

No insulin is formed due

to the destruction of β-cells of the islets of Langerhans caused by an

autoimmune reaction 

Insulin is usually formed

normally, but the cells are resistant to it (either the number of receptors is

reduced or it is a disorder of insulin signal transmission) -

To distinguish these two

types, it is appropriate to use the direct determination of

If we want to determine

its endogenous production (it is approximately 50-60% taken up by the liver),

it is better to determine