Ama-syringe abasebenzisi be-insulin enzelwe i-insulin ejwayelekile ye-U-100. Ukuxubeka kwe-insulin kunjalo ukuthi i-1 ml yoketshezi lwe-insulin inama-"units" ajwayelekile ayi-100 e-insulin. Njengoba amabhodlela e-insulin avamise ukuba yi-10 ml, ibhodlela ngalinye line-1000 units.
Ama-syringe e-insulin enziwa ngokukhethekile emijovweni yokuzenzela futhi anezici ezilungele umsebenzisi:

· imicucu emifushane, njengoba imijovo ye-insulin ingaphansi kwesikhumba (ngaphansi kwesikhumba) kunokuba ibe ngaphakathi kwemisipha,

· imicucu enomthamo omncane, ukuze kube nobuhlungu obuncane, futhi

· izimpawu ngama-units e-insulin ukuze kube lula ukudweba umthamo we-insulin olinganisiwe.

· indawo encane efile ukuze kuncishiswe izinkinga ezibangelwa ukudweba okungalungile kwamandla ahlukene e-insulin.