Izinsiza zokufaka i-insulin zenzelwe i-insulin ejwayelekile ye-U-100. Ukudilizwa kwe-insulin kukhona ukuthi i-1 ml ye-fluid ye-insulin inama-100 "units" ejwayelekile e-insulin. Njengoba ama-vial e-insulin evame ukuba ngu-10 ml, i-vial ngayinye inama-1000 units.
Izinsiza ze-insulin zenziwe ikakhulukazi ukuze zisetshenziswe ekufakeni ngokwakho futhi zinezinhlaka ezinhle:

    · izikhali ezimfishane, njengoba ukufaka i-insulin ku-subcutaneous (ngaphansi kwesikhumba) hhayi intramuscular,

    · izikhali ezincane, ukuze kube nobuhlungu obuncane, futhi

    · izimpawu kuma-units e-insulin ukuze kube lula ukukdrawa umthamo olinganisiwe we-insulin.

    · isikhala esiphansi sokufa ukuze kuncishiswe izinkinga ezidalwa ukuhlela okungafanele kokudweba amandla e-insulin ahlukene.