Download Dosage Calculations

Supplemental Instruction Handouts
Dosage Calculations
Practice Test 1
1. A bottle contains 150 mL of Erythrocin suspension. Its label reads: 250 mg per 2 mL. The
physician order reads: Erythrocin 150 mg po q6h. How many milligrams is the client
receiving in a day?
2. The order reads: EverTab 500 mg po tid. Supplied:
See label. How many tablets do you give for each
dose?
3. The order reads: Bloxmilan 250 mg po q6h.
Supplied: See label.
a. Identify the generic name of the drug.
b. What volume of medication do you
administer for one dose?
4. Your client is to receive Humulin L insulin 24 units Sub-Q daily ac 7:30 AM. The 10 mL
multidose vial contains 100 units/mL.
a. How many millilitres will you give for one dose?
b. When will you give it?
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5.
Write out ONLY the underlined abbreviations in full for the following medication. Order
Meperidine 50 mg q4h Sub-Q or IM prn.
6. Aminophylline 0.2 g qid is ordered. Supplied are tablets containing 200 mg. How many
tablets will be given for the whole day?
7. Ordered is Thyroxin 0.15 mg po daily. The bottle label notes that each tablet contains 0.05
mg. How many tablets will you administer?
8. The doctor orders 0.75 grams of penicillin po tid for a client with an infection. How many
mg is the client receiving per day?
9. The medication cabinet contains 450 mL of Principen Ampicillin for Oral Suspension with a
concentration of 250 mg per 5 mL when reconstituted. The doctor has ordered Principen
oral solution 150 mg po qid. What volume of medication do you give daily?
10. An oral solution of potassium chloride contains 20 mEq in 30 mL. The doctor orders 15
mEq to be given. What volume of solution do you administer?
11. Convert the following:
a. 6.07 L
b. 250 mcg
c. 180 mL
d. 407 mcL
e. 500 mg
= _______________________ mL
= _______________________ mg
= _______________________ L
= _______________________ mL
= _______________________ g
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ANSWERS:
1. 600 mg
2. 2 tablets
3. a. amoxicillin
4. a. 0.24 mL
b. 10 mL
b. before meals (7:30 am)
5. every four hours subcutaneously or intramuscularly as needed
6. 4 tablets
7. 3 tablets
8. 2250 mg
9. 12 mL
10. 22.5 mL
11.
a. 6070 mL
b. 0.25 mg
c. 0.18 L
d. 0.407 mL
e. 0.5 g
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