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Concentration label quiz

Practice reading six vial and syringe examples.

A U-100 syringe shows 100 units. What volume is that?
A vial label says 12 mg in 3 mL. What is its concentration?
At 5 mg/mL, how much medicine is in 20 U-100 units?
A practice dose is 7.5 mg at 10 mg/mL. What U-100 volume is that?
Your calculation is 37.5 units, but the syringe has whole-unit marks. What next?
A medicine comes in a pen. Can its dial or clicks be converted using this U-100 vial math?

Your score will appear here

How this works

The math

Practice uses U-100 volume arithmetic, not pen settings.1

Before you act on this

For information only, not medical advice. Verify results with your healthcare provider; Onederland accepts no liability for use of these tools.

  • Runs on this device. Nothing you type is sent anywhere.
  • Every figure names its source, below.
  • Education, not medical advice. Your prescriber comes first.
Sources

Sources

  1. FDA: dosing errors with compounded injectable semaglutide, July 26, 2024. fda.gov

Label sources last checked on October 30, 2026. Onederland summarizes them; your prescriber and the full prescribing information come first.

Concentration label quiz

Can a quiz check my actual vial?

No. These are invented practice examples. Confirm the concentration and instructions on your own vial with your pharmacist.

Published by Micktron LLC · Sources checked October 30, 2026

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