Never used these pens before. I am assuming you can set the amt of IU on the pen for the Injection? And whats the lowest you can set the pen to? I saw you posted some of these pens I am concidering getting me some of them. and if the pen Sets to MG and not iu whats the raotio of MG to IU? I am new to Growwth never used it. I am going to shooot you a PM NJshore9 so we can talk about it if u dont mind.