The basic detection of insulin on the MWCNTs/DMF modified electrode was done on sample with
higher insulin concentration in order to examine the detection abilities of the electrode. Example of
current response to 10 ȝmol.L-1 addition of insulin into the buffer solution is shown in the Fig 3b. The CV
response shown in the Fig 3b confirmed that the MWCNTs/DMF modified electrode is able to detect
insulin.