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

Study for the Foundation Year Pharmacy – Clinical Practice Test. Prepare with detailed questions, step-by-step explanations, and test format insights. Enhance your readiness and confidence!

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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