An order is for . The product label states per tablet. How many tablets are needed for one dose?
2 Medication Dosage Calculations Online Quiz Questions
Use this free practice quiz with 20 questions to review 2 Medication Dosage Calculations, test your knowledge, and prepare for your next test or exam.
In dimensional analysis, arrange the conversion factors so unwanted units and only the requested administration unit remains.
True or false: A correct medication-dose calculation by itself establishes that the order is clinically appropriate.
- A
True
- B
False
True or false: A calculated dose that is not a whole number of tablets means the tablet may be split, regardless of the product.
- A
True
- B
False
A caregiver needs to measure an oral liquid medication. Which option is recommended to reduce measurement errors?
- A
A household teaspoon
- B
A metric oral dosing syringe or other metric dosing device
- C
A serving spoon
- D
Any spoon that appears to hold the right amount
For safer documentation, use a for an amount below one, and avoid a after a decimal point.
An oral-liquid order is for 180mg. The label gives a concentration of 90mg in 5mL. What volume should be measured? Enter the numerical value in mL.
Before calculating an injectable dose, select all the details that should be checked against the order and product information.
- A
The medication and prescribed dose
- B
The route
- C
The vial strength or concentration
- D
The diluent and reconstitution directions
- E
The final concentration stated for the prepared product
- F
Relevant storage instructions
- G
Whether the dose and label use matching units
- H
Assume the added diluent volume is the final solution volume
A ready-to-use injection is labeled 80mg/mL, and the order is for 120mg. What volume is needed? Enter the numerical value in mL.
True or false: When calculating a dose from a reconstituted medication, use the prepared product’s stated final concentration rather than treating the added diluent volume as the final volume.
- A
True
- B
False
A hypothetical reconstituted product is labeled with a resulting concentration of 300mg/mL. The order is for 450mg. What volume is calculated?
- A
0.67 mL
- B
1 mL
- C
1.5 mL
- D
2 mL
A dose calculation seems unusual, and one detail in the order is unclear. Select all appropriate actions.
- A
Verify the order, patient, route, product, concentration, and calculated amount against the label and applicable reference or protocol
- B
Stop and clarify the concern with the appropriate clinician or pharmacist
- C
Proceed only after unclear information has been clarified
- D
Change the prescribed dose to a more familiar amount without consultation
A calculation gives 1.37mL, but no rounding direction is stated in the order. What is the best next step before documenting or measuring a rounded amount?
- A
Round to the nearest whole milliliter
- B
Always round to the nearest tenth of a milliliter
- C
Choose whichever rounding method makes the volume easiest to measure
- D
Check the applicable policy or medication instructions before rounding
An order is for 0.6g, and the product label states 200mg per tablet. Show how you would convert the dose and calculate the number of tablets. Include one safety verification you would complete before administration.
Which tool should you use to measure a prescribed dose of oral liquid medication?
- A
A household teaspoon
- B
A metric oral dosing syringe or other metric dosing device
- C
A kitchen tablespoon
- D
An unmarked spoon of approximately the right size
Before calculating an administration amount, which information should you identify from the order and product label?
- A
Calculate the amount using the first strength number you notice on the package.
- B
Begin the calculation before checking the medication's route.
- C
Identify the medication, prescribed dose, route, and available strength or concentration.
- D
Use the dose from a previous order if the current label is difficult to interpret.
A powder medication is reconstituted according to its product instructions. Which concentration should you use to calculate the volume to administer?
- A
Use the resulting concentration stated for the prepared solution.
- B
Assume the added diluent volume is the final solution volume.
- C
Calculate from the powder amount without checking the product's reconstitution directions.
- D
Use a concentration from a different product with a similar name.
You calculate an administration amount, but the result seems unusual for the order. What should you do next?
- A
Round the result until it looks more typical.
- B
Administer the calculated amount because the arithmetic is complete.
- C
Change the route to match the available product.
- D
Stop and clarify the order or calculation with the appropriate clinician or pharmacist.
An order is for 0.75 g of a medication. The product is labeled 250 mg per tablet. How many tablets are needed for one dose?
An injection is ordered at 96 mg. The ready-to-use product is labeled 64 mg/mL. How many milliliters should be administered?