Question

question 3: a provider writes a prescription for insulin 100 units/ml with the following sig: inj 40 u sc tid x 10 days. how many milliliters should be dispensed? a. 10 ml b. 12 ml c. 14 ml d. 16 ml

Explanation:

Step1: Calculate total units per day

The patient takes 40 units three - times a day (tid), so the units per day is $40\times3 = 120$ units.

Step2: Calculate total units for 10 days

For 10 days, the total units is $120\times10=1200$ units.

Step3: Calculate volume to be dispensed

The insulin concentration is 100 units/mL. Let the volume be $V$. We know that $\text{Concentration}=\frac{\text{Units}}{\text{Volume}}$, so $V=\frac{\text{Units}}{\text{Concentration}}$. Substituting the values, $V = \frac{1200}{100}=12$ mL.

Answer:

B. 12 mL