No, follow your doctor's orders with insulin dosages. Too much insulin can cause an unsafe drop in blood sugar.
In order to do that you would have to be able to remove the saline that was already mixed in with the insulin which is impossible on an unprofessional level. You need to either get 100% insulin or buy it premixed 70 30.
I am from The United States other country's may have different laws. Insulin is sold over the counter due to the fact that people with Diabetes don't always have a prescription for the medicine yet they still need to take it to live. In my area these insulin's range in price from $40-$60 There is a list of insulin sold over the counter such as Novolin N, Novolin R, Novolin 70/30, Humulin N, Humulin R, Humulin 70/30, Humulin 50/50and so on. There is a list of insulin NOT SOLD OVER THE COUNTER. Apidra, lantus, Novolog, Humalog ect. So in fact it would be murder if you could not purchase insulin over the counter. Although if you have no money and you need insulin it would seem that you might be out of luck or life.
Humulin N 30/70 typically peaks around 2-12 hours after injection, with a duration of action of about 18-24 hours. It is important to monitor blood glucose levels closely to determine the peak time for each individual.
30 * 76 = 30 * (70 + 6) = 30*70 + 30 * 6 = 2100 + 180 = 228030 * 76 = 30 * (70 + 6) = 30*70 + 30 * 6 = 2100 + 180 = 228030 * 76 = 30 * (70 + 6) = 30*70 + 30 * 6 = 2100 + 180 = 228030 * 76 = 30 * (70 + 6) = 30*70 + 30 * 6 = 2100 + 180 = 2280
70% of 30= 70% * 30= 0.7 * 30= 21
70% of 30= 70% * 30= 0.7 * 30= 21
30+70 = 100
40
30% of 70 = 70*30/100 = 21
Percentage decrease from 70 to 30 is ((70 - 30)/70) x 100 = (40/70) x 100 = 4000/70 = 400/7 = 57.14%
70-30 sharing = 40
70 x 30 = 2,100