ExCPT Test ExCPT Pharmacy Calculations 2

Question 1

A pediatric dose of ibuprofen is 10 mg/kg. The patient weighs 44 lbs. What is the correct dose in mg?

Accepted Answer

200 mg

Answer

44 lbs ÷ 2.2 = 20 kg; 20 kg × 10 mg/kg = 200 mg.

Question 2

How many milliliters are in 2.5 liters?

Accepted Answer

2,500 mL

Answer

1 liter = 1,000 mL, so 2.5 liters = 2,500 mL.

Question 3

A prescription reads: 'Take ii tabs tid × 10 days.' How many tablets should be dispensed?

Accepted Answer

60 tablets

Answer

2 tablets × 3 times/day × 10 days = 60 tablets.

Question 4

What is the flow rate in gtt/min for 1,000 mL of NS to be infused over 8 hours using a 15 gtt/mL drip set?

Accepted Answer

31 gtt/min

Answer

1,000 mL ÷ 480 min × 15 gtt/mL ≈ 31.25, rounded to 31 gtt/min.

Question 5

A compounding formula requires 30% of ingredient A and 70% of ingredient B. If making 120 g total, how many grams of ingredient A are needed?

Accepted Answer

36 g

Answer

30% × 120 g = 0.30 × 120 = 36 g of ingredient A.

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