Virtual Syringes Practice Collection: Try These Interactive Tools
- Joshua S. Farquharson
- Apr 30, 2024
- 4 min read
Audience: Healthcare Students and Instructors | Level: Beginner

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Simple Tools for Practicing Reading Syringes
Syringes come in different sizes depending on the amount of medication needed. The volume markings on each syringe help ensure accurate dosing and safe administration. Reading syringes correctly is a foundational skill in both clinical and training settings.
Use these interactive training tools to practice reading medical syringes of various volumes. From small-volume precision syringes to high-capacity ones used in wound care or tube feeding, this resource is perfect for students, instructors, and anyone exploring healthcare basics. Each virtual syringe allows you to adjust the medication level, observe the markings, and test your reading accuracy in a safe, guided environment.
How the Virtual Syringes Work
Instructions for learning through observation:
Drag the slider to increase and decrease the amount of medication in the syringe.
Observe the changes in units and evaluate the values of the lines.
To test your skills, follow these steps:
Select the HIDE/REVEAL button to hide the amount of medication.
Set the slider to any position on the syringe.
State the amount of medication aloud.
Select the green HIDE/REVEAL button to show the answer and confirm your accuracy.
💡 Tip: You can use your browser's zoom function to enlarge the syringes for easier viewing.
Virtual Syringes
U-30
A U-30 insulin syringe is an extra-fine insulin syringe that holds up to 30 units of insulin. It is used for very small insulin doses, which is helpful for patients (such as some children or insulin-sensitive individuals) who require only a tiny amount of insulin.
U-50
A U-50 insulin syringe holds up to 50 units of insulin. This medium-sized insulin syringe is commonly used for insulin doses that are too large for a 30-unit syringe but not high enough to need a full 100-unit syringe. In practical use, U-50 syringes provide clear 1-unit markings, making it easier for healthcare workers to measure mid-range insulin doses accurately.
U-100
A U-100 insulin syringe is a small syringe designed for insulin injections. It is calibrated to hold up to 100 units of insulin. This type is most commonly seen in diabetes care, used for routine subcutaneous insulin shots.
1 mL
A 1 mL syringe (also known as a tuberculin syringe) is used for administering very small volumes of medication with high precision. Common uses include tuberculosis skin tests, allergy testing, or administering pediatric medications, all of which require accurate measurement of tiny doses.
3 mL
A 3 mL syringe is one of the most frequently used syringe sizes in clinical settings. It’s very versatile and typically used for intramuscular or subcutaneous injections like routine vaccinations or medication injections. The 3 mL size comfortably holds the volume of most standard injections.
5 mL
A 5 mL syringe is a bit larger and is useful when an injection or fluid withdrawal requires a moderate volume. For instance, certain intramuscular injections or IV medication doses might be around 4–5 mL, which this syringe can accommodate.
10 mL
A 10 mL syringe is often used for handling larger volumes of fluid in medical procedures. In hospitals, 10 mL syringes are commonly seen when nurses flush intravenous (IV) lines with saline or administer IV medications that require dilution. They are also used when a larger sample or medication dose is needed.
20 mL
A 20 mL syringe is a large-capacity syringe used in situations where a significant volume of fluid must be injected or withdrawn. You might find 20 mL syringes in use in critical care or surgical settings – for example, an anesthesia provider drawing up anesthetic agents, or a nurse irrigating a wound with a substantial amount of solution.
50 mL
A 50 mL syringe is a high-volume syringe used when a large amount of fluid is needed at once. It is commonly seen in procedures like wound irrigation (flushing wounds with saline) or delivering nutrition through a feeding tube, since it can hold a substantial volume. This size may also be used with syringe pumps to slowly administer medications in critical care.
60 mL
A 60 mL syringe is one of the largest standard syringe sizes, used for handling very large volumes. They are commonly used for wound irrigation and for feeding tube care (such as flushing or giving liquid nutrition), since they can deliver a substantial amount of fluid at once. The large size allows careful control when pushing or pulling fluids.
Instructor Tips
If you're a trainer, coach, or peer mentor, here are ways you can use this tool effectively in various teaching environments:
Virtual Classroom Tips
Share screen and walk through a syringe demo.
Use “hide and guess” activities during a live session.
Challenge students to record their guess and reflect on the result.
In-Person Classroom or Peer Teaching Tips
Project the simulation on a smartboard.
Pair students to quiz each other using different syringe sizes.
Include syringe stations in clinical skill rotations.
Teaching a Classmate or Colleague
Whether you're mentoring a fellow student or training a team member, here are a few helpful steps to turn the virtual syringes into a coaching opportunity:
Start With This Prompt:
"Let’s say you're drawing medication from a vial. How much do you need? Can you find the correct amount on this syringe?"
Then:
Show them how the markings work.
Practice estimating volumes together.
Celebrate accuracy and encourage retrying for improvement.
Closing Thoughts
Understanding syringe measurements is essential in healthcare. Whether you're preparing for clinical skills, tutoring a peer, or just brushing up on fundamentals, these tools offer a hands-on, low-pressure way to practice. Come back and practice anytime! If you'd like a step-by-step approach for learning how to read syringes, check out our detailed guide.
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