Ontario Registered Pharmacy Technician (RphT) Practice Exam

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A prescription is written for Humulin N u-100 insulin – 10 mL, use 40 units daily. What is the days supply?

  1. 25

  2. 34

  3. 21

  4. 28

The correct answer is: 25

The days supply has been determined based on the daily dosage amount of 40 units and the quantity of the prescription, which is 10 mL. To determine the days supply, divide the quantity by the daily dosage amount and multiply by the number of units per mL. In this case, the calculation would be (10 mL/40 units) x (100 units/mL) = 25 days supply. Option B is incorrect because it does not take into consideration the daily dosage amount and the units per mL. Option C is incorrect because it does not take into consideration the quantity of the prescription and the units per mL. Option D is incorrect because it does not take into consideration the daily dosage amount and the quantity of the prescription.