How many units are contained in a single 3 mL pen of 100 units/mL insulin?

Prepare for the Foundation Year Pharmacy Exam. Study with flashcards and multiple-choice questions. Each question comes with hints and explanations. Ensure your readiness for the exam!

Multiple Choice

How many units are contained in a single 3 mL pen of 100 units/mL insulin?

Explanation:
Understanding how many units you have depends on concentration times volume. If insulin is 100 units per milliliter and the pen holds 3 milliliters, the total units are 100 × 3 = 300. So the pen contains 300 units of insulin. If the volume were smaller or the concentration higher, the total units would change accordingly.

Understanding how many units you have depends on concentration times volume. If insulin is 100 units per milliliter and the pen holds 3 milliliters, the total units are 100 × 3 = 300. So the pen contains 300 units of insulin. If the volume were smaller or the concentration higher, the total units would change accordingly.

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