Dosage calculations worksheet with answers

Free printable Dosage calculations worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
? × 1 mg

The prescription is 2000 micrograms (mcg) of a drug. The tablets contain 1 mg each. How many tablets n do you give?

2000 mcg1 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 220 mg. The stock solution contains 50 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

220 mg50 mg/1 mL
V = mL
3.Medium
1:1000ampouleV = ? mL

An ampoule of epinephrine (adrenaline) is labelled 1:1000 (1 mg/mL). The prescription is 0.3 mg IM for anaphylaxis. What volume V do you draw up?

1:10000.3 mg
V = mL
4.Medium
80 kgBSA = 1.73 m²250 mg/m²D = ? mg

A patient weighing 80 kg has a body surface area of 1.73 m². The prescription is 250 mg/m². Find the dose D in mg.

80 kgBSA = 1.73 m²250 mg/m²
D = mg
5.Hard
34 kg150 cmBSA = √(h·w/3600)75 mg/m²D = ? mg

A patient is 150 cm tall and weighs 34 kg. The prescription is 75 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

150 cm34 kg75 mg/m²
D = mg
6.Hard
25k units500 mL? mL/h2000 units/h

An infusion contains 25000 units of a drug in 500 mL. The prescription is 2000 units per hour. At what rate R do you set the pump, in mL/h?

25000 units/500 mL2000 units/h
R = mL/h

Answer key

  1. 1. n = 2 tablets
  2. 2. V = 4.4 mL
  3. 3. V = 0.3 mL
  4. 4. D = 432.5 mg
  5. 5. D = 89.27 mg
  6. 6. R = 40 mL/h

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