PW shake...how long before insulin clears your system?

[JG1]

Lets say I take 75g Dextrose, 50g Whey Isolate, and 200mg r-ALA as my PW shake. Approx how long would it take for my insulin level to fall back to pre PW shake levels? I'm asking because my meal after my PW shake is 8oz top round steak with 1Tbs Udo's. I eat this 1.5 hours after I drink my PW shake...just want to be sure my insulin levels aren't high since I'm eating a decent amount of fat with this meal.

 

[JG1]

^

 

[Burning_Inside]

well this link here explains how hi up on the glycemic index foods are, but doesn't explain how long a spike can last. I think the only way to tell would most likely be to buy a glucometer as I'm sure this time period is different for everyone.