What is the correct subcutaneous injection technique?
Mia Smith
Published Feb 13, 2026
What is the correct subcutaneous injection technique?
Subcutaneous injections can be given straight in at a 90 degree angle or at a 45 degree angle. Give the injection at a 90 degree angle if you can grasp 2 inches of skin between your thumb and first finger. If you can grasp only 1 inch of skin, give the injection at a 45 degree angle.
Which two techniques apply when giving a subcutaneous injection?
- Holding the needle upwards, tap the syringe gently to move any air bubbles towards the needle.
- Push the plunger gently to remove the air bubble and squirt a small amount of the medicine into the air.
- Lift the skin in the chosen injection area between your thumb and index finger.
Where do you give a subcutaneous injection?
Subcutaneous tissue is all over your body, but the most common areas for subcutaneous injections are:
- the upper outer area of the arm.
- the front and outer sides of the thighs.
- the abdomen, except for a 2 inch area around the navel.
- the upper outer area of the buttocks.
- the upper hip.
What are the indications for subcutaneous injections?
Indications. Subcutaneous injections are to be used for small volumes of drugs that require slow absorption and long duration of action, such as heparin or insulin.
Which of the following techniques are correct to give an intramuscular IM injection?
Hold the skin around where you will give the injection: With your free hand, gently press on and pull the skin so that it is slightly tight. Insert the needle into the muscle: Hold the syringe barrel tightly and use your wrist to inject the needle through the skin and into the muscle at a 90 degree angle.
What’s the difference between subcutaneous and intramuscular?
The key difference between subcutaneous intramuscular and intravenous injection is that in subcutaneous injection, the drug is injected under the skin, while in intramuscular injection, the drug is delivered deep into the muscles, and in intravenous injection, the drug is given directly into a vein.
What is the purpose of giving a subcutaneous injection?
Subcutaneous injection can be used to give many types of medications for various medical conditions. There are fewer blood vessels in the fatty layer of connective tissue just beneath the skin than the muscle tissue. Having fewer blood vessels means that medication injected subcutaneously is absorbed more slowly.
Which is a contraindication for a subcutaneous injection?
. Typically, a 22- to 25-G ⅝-inch needle is used for vaccinations. Heparin and insulin are usually administered with a 31-G 3⁄16- to 5⁄16-inch needle. Nurses administering subcutaneous injections must use safety syringe devices and know how to activate the safety mechanism.
How are subcutaneous injections absorbed?
As subcutaneous tissue has few blood vessels, the injected drug is diffused very slowly at a sustained rate of absorption. Therefore, it is highly effective in administering vaccines, growth hormones, and insulin, which require continuous delivery at a low dose rate.
What is the difference between intramuscular and subcutaneous injections?
Intramuscular injections are absorbed faster than subcutaneous injections. This is because muscle tissue has a greater blood supply than the tissue just under the skin. Muscle tissue can also hold a larger volume of medication than subcutaneous tissue.
What happens if you give a subcutaneous injection intramuscularly?
Serious reactions to intramuscular injections are rare; in one series of 26 294 adults, of whom 46% had received at least one intramuscular injection, only 48 (0.4%) had a local adverse effect. However, subcutaneous injections can cause abscesses and granulomas.
What is subcutaneous injection technique?
Subcutaneous injection technique: an evidence-based approach Injections are routinely administered by nurses in acute care settings and in the community. Nurses require a thorough understanding of anatomy and physiology, pharmacological principles and equipment, and potential risks to the patient of injections.
Is there evidence-based review of the administration of insulin injections?
This article, the first of two, provides an evidence-based review of injection administration, with particular reference to subcutaneous injections, and suggests a framework for best practice. Keywords: Best practice; heparin; injection; insulin administration; medication; medicines management; subcutaneous injection.
How are drugs administered by the subcutaneous route?
Drugs administered by the subcutaneous route are deposited into subcutaneous tissue (Fig 1); small volumes (up to 2ml) of non-irritant, water-soluble drugs can be administered by subcutaneous injection (Dougherty and Lister, 2015).
Why are insulin injections given at a 90-degree angle?
It is recommended that subcutaneous injections, particularly of insulin, are administered at a 90-degree angle to ensure that the medication is delivered into the subcutaneous tissue (Down and Kirkland, 2012; Hunter, 2008).