Hi - can someone please tell me what this means? I read it somewhere on the "Acrotracker" spreadsheet. "...aside from upping dose of basal and booster as needed" My Baby had her blood drawn today to check her IGF-1 and IAA. She's up to 7.5u Lantus BID. The vet mentioned possibly adding a short-acting insulin to the mix and I think that's what this "R" is that I keep reading?