Then you reduce if he goes below 90.
From SLGS:
After 1 week at a given dose perform a 12 hour curve, testing every 2 hours OR perform an 18 hour curve, testing every 3 hours
Note: Random spot checks are often helpful to "fill in the blanks" on kitty's spreadsheet.
- If nadirs are more than 150 mg/dl (8.3 mmol/L), increase the dose by 0.25 unit
- If nadirs are between 90 (5 mmol/L) and 149 mg/dl (8.2 mmol/L), maintain the same dose
- If nadirs are below 90 mg/dl (5mmol/L), decrease the dose by 0.25 unit
- As your cat's blood glucose begins to fall mostly in the desired range [lowest point of the curve approaching 100 mg/dl (5.5 mmol/L) and pre-shot value around or below 300 mg/dl (16.6 mmol/L)], do lengthen the waiting time between dose increases. If you decide to change another factor (e.g., diet or other medications), don't increase the insulin dose until the other change is complete (but do decrease the dose if your cat's glucose numbers consistently fall below 90 mg/dl (5.0 mmol/L) as a result of the change). Don't be tempted to rush the process along by increasing the dose more quickly or in larger increments-- no matter how high your cat's blood glucose is! Rushing towards regulation will cost you time in the long run, because you may shoot past the right dose.
Lather, Rinse, and Repeat!
By the way, last night when you reduced Gus' dose because you had a blue preshot - I want to encourage you to focus primarily on the low points (nadirs). Lantus dosing is based upon those low points, not the higher numbers. Think of a blue preshot as making huge progress! The dose you're giving is finally working and getting him into better numbers, so you don't usually want to back away from that dose unless you can't monitor him or he's not eating normally. In this group we encourage people to stick with the dose if it's over 150 preshot, and if it's less, the first time post and ask for advice on how to proceed. Someone will be able to help you with your choices and figure out what to do, and when they do that, they'll also stay with you through the cycle in case you see low numbers, or find someone who will. You won't have to go it alone!