The preferred choice to measure 45 units of U-100 insulin is 0.5 ml syringes.
U-100 insulin stands for 100 units of insulin per milliliter of fluid.
There are generally three types of syringes to measure different units of insulin. They are as follows:
1. 0.3 ml syringes to measure less than 30 units of insulin doses
2. 0.5 ml syringes to measure 30 to 50 units of insulin doses
3. 0.1 ml syringes to measure more than 50 units of insulin doses
To measure 1 unit of U-100 insulin, 0.01 ml of fluid would be used in a 1ml syringe. Thus measuring 45 units it would preferably use 0.5 ml syringes.
Insulin is given as a subcutaneous injection to avoid it penetrating the muscle and damaging the blood vessel. Therefore, you should avoid long syringes and use short syringes to measure doses of insulin.
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