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How to Read a Syringe

This article will explain how to read a syringe. As a nurse, it is very critical you understand how to properly read a syringe. There are many different types of syringes available for usage. The nurse will need to select the appropriate syringe size based on how much of a medication is ordered by the physician.

For example, if a physician orders 0.25 mL of a medication, the 1 mL syringe is the best for achieving this dose because it allows you to measure very small amounts of a medication.

Therefore, I will be discussing how to read 5 different types of syringe you will encounter as a nurse, such as:

  • 10 mL
  • 5 mL
  • 3 mL
  • 1 mL
  • 100 unit Insulin

Video on How to Read a Syringe

how to read a syringe, nursing skillsParts of the Syringe

Adaptor: this is the area where you screw on a needle (if you were giving an intramuscular injection etc.) or onto the IV hub of the patient’s IV to give a medication.

Barrel with a readable scale: this is where you will match up the top of the plunger seal (see image at the side) and the line on the scale with the amount of medication you need to administer. Most scales on the barrel are in mL (milliliters) or cc (cubic centimeters). If you are administering insulin you will use a syringe that measures in units. NOTE: always determine the capacity of your syringe because each syringe has different measurements on its scale..hence each line represents a different increment of measurement (more information on this below).

Plunger: assists will drawing up and injecting the medication

Tip: If you hear someone say give “10 cc” of this medication, cc is the same as mL. Therefore, 10 mL equals 10 cc.

 reading plunger on syringeReading a 10 mL Syringe

This is a 10 mL syringe. Each line measures in 0.5 increments until it reaches a total capacity of 10 mL.

reading a syringe, 10 mL

  1. TEST YOURSELF: How much is in this 10 mL syringe? (answer key below)

Reading a 5 mL Syringe

This is a 5 mL syringe. Each line measures in 0.2 increments until it reaches a total capacity of 5 mL.

reading syringes, 5 ml

  1. TEST YOURSELF: How much is in this 5 mL syringe? (answer key below)

reading syringe, how to read a syringe

Reading a 3 mL Syringe

This is a 3 mL syringe. Each line measures in 0.1 increments until it reaches a total capacity of 3 mL.

reading syringe, 3 ml

  1. TEST YOURSELF: How much is in this 3 mL syringe? (answer key below)

reading 3 ml syringe, quiz

Reading a 1 mL Syringe

This is a 1 mL syringe. Each line measures in 0.01 increments until it reaches a total capacity of 1 mL.

reading 1 ml syringe, quiz

  1. TEST YOURSELF: How much is in this 1 mL syringe? (answer key below)how to read a syringe, 1 ml

Reading a 100 unit Insulin Syringe

This is a 100 unit insulin syringe. Each line measures in 2 increments until it reaches a total capacity of 100 units.

insulin syringe, 100 unit

  1. TEST YOURSELF: How much is in this 100 unit syringe? (answer key below)

Insulin syringe quiz

Answer Key

  1. 4.5 mL
  2. 2.2 mL
  3. 0.7 mL
  4. 0.25 mL
  5. 72 units

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