How to Give a Testosterone
Intramuscular (IM) Injection
What is an intramuscular injection?
An intramuscular (IM) injection, (illustration on right)
delivers medication deep into the muscle tissue. This
allows the medication to be quickly absorbed into thebloodstream. Intramuscular shots are given at a 90degree angle. The needle for IM injections can be 22-23
Gauge, 1-1.5 inches in length, adjusted for thickness ofsite.

Step 1: Setting up for the injection
Find a comfortable, well-lit working place and inject atAdapted fromhttp://www.immunize.org/catg.d/p3084.pdf on
3/16/2013. We thank the Immunization Action
Coalition.

the same time each day.
1. Clean your work area.
2. Remove medication from the refrigerator and let it reach room temperature.

3. Make sure it is the medication your doctor prescribed. Check the expiration
date on the vial. Do not use a medication with particles, medication that isdiscolored, or is expired. Wash your hands. Hand
washing is one of the most important things you
can do to prevent infection.
Assemble your supplies, which include:
1. Medication in a vial
2. Disposable syringe and needles, one 18 G
needle to draw up medication then switch

A syringe with a needle and a vial

to injection needle (22-23 G; 1-1.5 inch)
3. Alcohol swabs
4. Puncture proof disposal container

Ambulatory Care Services-1-iStockphoto/ThinkstockStep 2: Selecting and preparing the injection site
Vastus lateralis muscle in the thigh:Choose this site if are injecting yourself, or if a caregiver gives you theinjection. Look at your thigh and divide it horizontally into 3 equal parts. Theinjection will go in the outer middle third. The thigh is a good place to giveyourself an injection because it is easy to see.
The picture on the left shows
the position for self-injection.

When another person is giving theinjection (pictured below), the injection
location does not change.
Form a V with your fingers by
separating your first finger from theother 3 fingers. Place the heel of yourhand on the bone (femur) that ends
before the knee bends and aim theinjection right above the V in the centerof the thigh.
Gluteus maximus muscle in the buttocks:
You may choose this site only if a caregiver gives you
the injection. To find the correct location for injecting
into the gluteus maximus muscle, expose the buttocks
and divide (in your mind) each buttock into fourparts. Aim the injection into the upper quarter of thebuttock (X on the diagram), towards the hip bone
portion.
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Step 3: Preparing the injection dose
1. Take the cap off the vial. Clean the rubber stopper with one alcohol swab.
Allow to dry.
2. Check the package containing the syringe. If the package has been opened ordamaged, do not use that syringe.
3. Pull the 18 G needle cover straight off the syringe. Then, pull back theplunger and draw air into the syringe. The amount of air drawn into thesyringe should be the same amount (mL or cc) as the dose that your doctor
prescribed. Do not let the needle touch any surfaces.
4. Keep the vial on your flat working surface and insert theneedle straight down through the center of the rubberstopper. Do not put the needle through the rubber stopper
more than once.
5. Push the plunger of the syringe down and push the air fromthe syringe into the vial.
iStockphoto/Thinkstock

6. Keeping the needle in the vial, turnthe vial upside down. Position the needle so theliquid is covering the tip of the needle.

iStockphoto/Thinkstock

7. Keeping the vial upside down, slowly pull back on theplunger to fill the syringe with the medication to thenumber (mL or cc) that matches the dose your doctor
ordered.

iStockphoto/Thinkstock

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How to Give Yourself a Testosterone IM Injection-3-8. Keeping the needle in the vial, check for air bubbles
in the syringe. If there are air bubbles, gently tap thesyringe with your fingers until the air bubbles riseto the top of the syringe. Then slowly push theplunger up to force the air bubbles out of thesyringe without removing the needle from thebottle.
Hemera/Thinkstock

9. After air bubbles are gone, pull the plunger backto the number (mL or cc) marking on the syringethat matches your dose. Remove the 18 G needle
and replace it with the IM needle.
10.Check to make sure that you have the correct
dose in the syringe. It is very important that youuse the exact dose prescribed by your doctor.
11. Do not lay they syringe down or let the needle
touch anything.
iStockphoto/Thinkstock

Step 4: Give the injection
1. Clean the injection site skin with an alcohol swab; let it air dry.
2. Hold the skin around the injection site in the manner described above.
3. Insert the IM needle into the muscle at a 90-degree angle with one quick
and firm motion.
4. After inserting the needle into the muscle take your hand off the skin.
You may feel some burning or pressure as the medicine enters yourmuscle.
5. When you finish injecting the full dose of the medication into the muscle,
remove the needle.

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How to Give Yourself a Testosterone IM Injection-4-6. Gently press an alcohol swab on the injection site. Hold pressure on site
until there is no bleeding. You can place a band aid on injection site ifneeded.
Tips for reducing injection pain•

Inject medicine that is at room temperature.

•Remove all air bubbles from the syringe before injection.

•Let the skin dry after using alcohol wipes before injecting.

•Keep the muscles in the injection area relaxed.

•Break through the skin quickly with the needle.

•Don’t change the direction of the needle as it goes in or comes out.

•Do not reuse disposable needles.

Instructions for disposing of “sharps”:
Improper disposal of syringes and other sharp objects can pose a health risk
and damage the environment. Most counties in Michigan offer residents a safe
needle disposal program through county solid waste divisions in each county.
•To find out if your county has a program, please visit:
http://www.michigan.gov/documents/deq/whm-stsw-sharps-collectionlist_196524_7.pdf.

•For information on how to store and dispose of used needles visit:
http://www.safeneedledisposal.org/Disclaimer: This document contains information and/or instructional materials developed by theUniversity of Michigan Health System (UMHS) for the typical patient with your condition. It may
include links to online content that was not created by UMHS and for which UMHS does not assume
responsibility. It does not replace medical advice from your health care provider because yourexperience may differ from that of the typical patient. Talk to your health care provider if you haveany questions about this document, your condition or your treatment plan.
Authors: Kathy Herman RN; Connie Hill, RN
Reviewer: Amy McAlister, MSA
Patient Education by University of Michigan Health System is licensed under a Creative Commons
Attribution-NonCommercial-ShareAlike 3.0 Unported License. Thinkstock images in this resource arelicensed for use solely by the University of Michigan. Other uses such as republication,retransmission, and reproduction are not allowed. Last revised: 10/2022
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