Gluteal Injection Site for Testosterone: A Complete Step-by-Step Guide to Safe Glute Injections

If you have been prescribed testosterone replacement therapy (TRT) and your clinician has recommended intramuscular injections, there is a good chance the gluteal muscles will be one of your primary injection sites. The glutes are one of the most commonly used locations for intramuscular testosterone injections, and for good reason — they are large, well-vascularised muscles that can comfortably accommodate the oil-based testosterone preparations used in TRT.

But knowing that you need to inject into your glute and knowing exactly where and how to do it safely are two very different things. Many men starting TRT feel anxious about self-injection, and much of that anxiety comes from uncertainty rather than the procedure itself. Once you understand the anatomy, locate the correct gluteal injection site, and practise the technique a few times, it becomes a routine part of treatment that takes less than five minutes.

This guide provides a detailed, step-by-step walkthrough of gluteal testosterone injections — covering the two main injection sites (ventrogluteal and dorsogluteal), how to locate each one using reliable anatomical landmarks, the equipment you need, the injection technique itself, common mistakes to avoid, aftercare, and when to seek help. It is written for men who are new to self-injection as well as those who want to refine their technique.

Ventrogluteal vs Dorsogluteal: Which Gluteal Injection Site Should You Use?

There are two gluteal injection sites used for intramuscular injections: the ventrogluteal site and the dorsogluteal site. Understanding the difference between them — and why one is now generally preferred over the other — is the first step in safe glute injection technique.

The Ventrogluteal Site (Preferred)

The ventrogluteal injection site is located on the side of the hip, over the gluteus medius and gluteus minimus muscles. It is now widely recommended as the preferred site for intramuscular injections by major nursing and clinical guidelines, including those published by the Royal College of Nursing and the World Health Organisation.

The reasons the ventrogluteal site is preferred include:

• Safety: The ventrogluteal area is free from major nerves and blood vessels. There is no risk of hitting the sciatic nerve, which is the primary concern with dorsogluteal injections.
• Consistent muscle depth: The gluteus medius provides a reliable depth of muscle tissue across a wide range of body types, making it easier to ensure the injection reaches the muscle rather than subcutaneous fat.
• Less subcutaneous fat: Compared to the dorsogluteal site, the ventrogluteal area typically has a thinner layer of fat overlying the muscle, which improves the reliability of intramuscular delivery.
• Reduced post-injection discomfort: Many patients report less soreness and fewer injection site reactions at the ventrogluteal site compared to the dorsogluteal.
• Easier access for self-injection: While it requires a slightly different hand position than the dorsogluteal site, many men find it more accessible for self-administration once they are familiar with the landmarks.

The Dorsogluteal Site (Traditional)

The dorsogluteal injection site is the “traditional” glute injection location — the upper outer quadrant of the buttock. It targets the gluteus maximus muscle and is the site that most people picture when they think of a glute injection. For decades, it was the default location taught in nursing education and clinical practice.

However, the dorsogluteal site carries several disadvantages that have led clinical guidelines to move away from recommending it as a first-choice location:

• Proximity to the sciatic nerve: The sciatic nerve runs through or near the gluteal region, and incorrect needle placement at the dorsogluteal site carries a risk — small but real — of sciatic nerve injury. This can cause severe pain, numbness, or weakness in the leg.
• Greater subcutaneous fat depth: The buttock area tends to have a thicker layer of subcutaneous fat than the ventrogluteal area, particularly in men with higher body fat percentages. This increases the risk of the injection being deposited into fat rather than muscle, which can reduce absorption and increase the likelihood of a painful lump.
• Superior gluteal artery: The dorsogluteal area is closer to the superior gluteal artery and vein, increasing the (small) risk of inadvertent intravascular injection.
• Less accessible for self-injection: Reaching behind to inject into your own buttock requires significant twisting, which can make it difficult to maintain a steady hand and precise needle placement.

The dorsogluteal site is not inherently dangerous — millions of injections have been safely administered there over the years. But when a safer, equally effective alternative exists (the ventrogluteal site), the clinical consensus is to use the safer option. If you are learning to self-inject, the ventrogluteal site is the recommended starting point.

How to Locate the Ventrogluteal Injection Site

Locating the ventrogluteal injection site correctly is essential for safety and effectiveness. The method uses anatomical landmarks on your hip to identify the correct area. With practice, you will be able to find the site in seconds.

Step-by-step landmark technique:

1. Identify the greater trochanter. This is the bony prominence on the outside of your upper thigh/hip. You can feel it by standing upright and pressing your fingers into the side of your hip — it is the hard, rounded bone that protrudes at the top of the thigh. If you rotate your leg inward and outward, you can feel the trochanter move.
2. Place your palm on the greater trochanter. If you are injecting into your right hip, use your left hand (and vice versa). Place the heel of your palm on the greater trochanter with your fingers pointing toward your head.
3. Spread your index and middle fingers into a V shape. Your index finger should point toward the anterior superior iliac spine (the bony point at the front of your hip — the bone you can feel at the front of your pelvis when you place your hands on your hips). Your middle finger should point toward the iliac crest (the curved ridge of bone you can feel along the top of your hip/pelvis).
4. The injection site is in the centre of the V. The triangular area formed between your two spread fingers is the ventrogluteal injection site. This is where you will insert the needle.

If you are struggling to locate the landmarks, standing in front of a mirror can help. Some men also find it helpful to have their clinician or nurse mark the site with a skin marker the first time, so they have a visual reference for future injections.

How to Locate the Dorsogluteal Injection Site

If you or your clinician have chosen to use the dorsogluteal site, the standard method for locating the correct area is the quadrant technique:

1. Visualise the buttock as four equal quadrants. Draw an imaginary vertical line down the middle of the buttock and an imaginary horizontal line across the middle.
2. The injection site is the upper outer quadrant. This is the quadrant furthest from the midline and closest to the hip. Injecting into this area minimises the risk of hitting the sciatic nerve, which runs through the lower and more central portions of the buttock.
3. Aim for the middle of the upper outer quadrant. Do not inject too close to the edges of the quadrant or too near the midline.

Even with correct technique, the dorsogluteal site carries a higher risk profile than the ventrogluteal site. If you have any doubt about your ability to locate the correct area, use the ventrogluteal site instead.

Equipment You Will Need

Before you begin, gather all equipment and prepare your workspace. Having everything ready before you start reduces fumbling and contamination risk.

• Your prescribed testosterone medication — in its glass ampoule or multi-dose vial
• Drawing needle — a larger gauge needle (typically 18–21 gauge) used to draw the testosterone from the ampoule or vial. This needle is not used for the injection itself.
• Injection needle — a separate, sterile needle used for the actual injection. For intramuscular glute injections, a 23–25 gauge needle with a length of 25–38mm (1–1.5 inches) is standard. The appropriate length depends on your body composition; men with more subcutaneous fat may need a longer needle to ensure the medication reaches the muscle.
• Syringe — typically 1ml or 2ml, depending on the volume of your prescribed dose
• Alcohol swabs — for cleaning the injection site and the top of the vial (if using a multi-dose vial)
• Cotton wool or gauze pad — for applying pressure after the injection
• Sharps disposal container — a proper sharps bin for safe disposal of used needles. Never place used needles in household bins.
• Plaster (adhesive bandage) — optional, for covering the injection site afterwards

Your prescribing clinic should supply or advise on the appropriate needle gauges and lengths for your specific medication and body type. If you are unsure, ask before your first injection.

Step-by-Step Injection Technique

The following technique applies to intramuscular injection at the ventrogluteal site, which is the recommended glute injection site for testosterone. The steps can be adapted for the dorsogluteal site, but the principles of hygiene, needle handling, and technique remain the same.

Step 1: Prepare Your Workspace and Wash Your Hands

Choose a clean, well-lit area with a flat surface where you can lay out your equipment. Wash your hands thoroughly with soap and water for at least 20 seconds. Dry with a clean towel. Hand hygiene is the single most important infection control measure.

Step 2: Prepare the Medication

If using a glass ampoule:

1. Tap the top of the ampoule gently to ensure all medication has settled to the bottom.
2. Snap the neck of the ampoule at the scored line using an ampoule snapper or by wrapping the top in a gauze pad and snapping away from you.
3. Attach the drawing needle to the syringe.
4. Insert the drawing needle into the ampoule and draw up the prescribed volume of medication. Hold the ampoule at a slight angle to access all the liquid.
5. Hold the syringe vertically with the needle pointing upward. Tap the syringe gently to move any air bubbles to the top, then push the plunger slowly to expel the air until a tiny drop of liquid appears at the needle tip.
6. Remove the drawing needle and safely dispose of it. Attach the sterile injection needle to the syringe. Do not touch the needle or allow it to contact any surface.

If using a multi-dose vial:

1. Clean the rubber stopper of the vial with an alcohol swab and allow it to dry.
2. Draw air into the syringe equal to the volume of testosterone you will withdraw.
3. Insert the drawing needle through the rubber stopper and inject the air into the vial (this equalises pressure and makes drawing easier).
4. Invert the vial and draw up the prescribed dose.
5. Remove bubbles and swap to the injection needle as described above.

Step 3: Prepare the Injection Site

1. Locate the ventrogluteal injection site using the landmark technique described above.
2. Clean the area with an alcohol swab using a circular motion from the centre outward. Allow the skin to dry completely — injecting through wet alcohol can sting and theoretically introduce alcohol into the tissue.

Step 4: Perform the Injection

1. Position yourself comfortably. You can stand with your weight shifted to the opposite leg (to relax the muscle on the injection side), or lie on your side with the injection-side hip facing up. A relaxed muscle reduces discomfort.
2. Hold the syringe like a dart. Grip the syringe barrel between your thumb and fingers, with the needle pointing directly at the skin at a 90-degree angle.
3. Spread the skin slightly with your non-dominant hand. Use the Z-track technique if you have been trained: pull the skin 2–3 cm to one side with your free hand before inserting the needle. This creates a zigzag path through the tissue when the skin is released after injection, which helps prevent medication from leaking back out through the needle track.
4. Insert the needle smoothly and decisively. A swift, confident insertion is less painful than a slow, hesitant one. Push the needle straight in at 90 degrees until it is fully inserted (or to the depth advised by your clinician).
5. Aspirate (optional, check with your clinician). Some clinical guidelines still recommend pulling back on the plunger slightly before injecting to check for blood return. If blood enters the syringe, you may have hit a blood vessel — withdraw the needle, dispose of it, and start again with a new needle at a slightly different location. However, the World Health Organisation and many UK clinical guidelines no longer recommend routine aspiration for the ventrogluteal site, as the risk of intravascular injection at this location is extremely low. Follow your prescribing clinician’s advice on this point.
6. Inject the medication slowly. Push the plunger steadily at a rate of approximately 1ml per 10 seconds. Injecting too quickly increases post-injection pain and the risk of a hard lump forming.
7. Wait 10 seconds after injection is complete. Before withdrawing the needle, keep it in place for approximately 10 seconds. This allows the medication to begin dispersing into the muscle and reduces leakage.
8. Withdraw the needle smoothly. Pull the needle straight out at the same angle it went in. If using the Z-track technique, release the stretched skin once the needle is out.

Step 5: Aftercare

1. Apply gentle pressure to the injection site with a cotton wool pad or gauze for 30–60 seconds. Do not rub — rubbing can push the medication into subcutaneous tissue and increase bruising.
2. Apply a plaster if there is any bleeding (usually minimal).
3. Dispose of all used needles and syringes immediately into your sharps bin. Never recap used needles.
4. Record the date, dose, and injection site in a log. This helps you track your rotation schedule and identify any patterns in injection site reactions.

Rotating Injection Sites

You should rotate your injection sites regularly to prevent the development of scar tissue, hard lumps, or lipodystrophy (changes in fat tissue) at overused sites. If you are injecting once or twice weekly, alternating between the left and right ventrogluteal sites is usually sufficient.

A practical rotation schedule for men on twice-weekly injections might look like:

• Monday: left ventrogluteal
• Thursday: right ventrogluteal
• Following Monday: left ventrogluteal
• Following Thursday: right ventrogluteal

If you want additional variety, the vastus lateralis (outer thigh) is another commonly used intramuscular injection site that can be added to the rotation. Some men alternate between glutes and thighs to give each site more recovery time between injections.

Common Mistakes and How to Avoid Them

Even with good technique, some issues are common when men first begin self-injecting. Here are the most frequent mistakes and how to avoid them:

• Injecting too quickly. Rushing the injection is the most common cause of post-injection pain and lumps. Slow, steady injection (approximately 10 seconds per ml) allows the muscle fibres to accommodate the oil-based testosterone gradually.
• Using the drawing needle for injection. The drawing needle becomes blunted after piercing the ampoule or vial stopper. Always swap to a fresh, sterile injection needle. Using a blunted needle makes the injection more painful and increases tissue trauma.
• Not relaxing the muscle. Injecting into a tense muscle is significantly more painful and can cause the needle to deflect. Shift your weight to the opposite leg, or lie down on your side with the injection-side hip on top.
• Incorrect site location. Using unreliable methods (such as guessing rather than using anatomical landmarks) to locate the injection site increases the risk of complications. Always use the landmark technique described above.
• Not rotating sites. Repeatedly injecting in exactly the same spot causes cumulative tissue damage. Rotate consistently between at least two sites.
• Hesitating during needle insertion. A slow, tentative needle insertion is more painful than a quick, confident one. Prepare yourself mentally, then insert the needle in a single smooth motion.
• Rubbing the site after injection. Gentle pressure is fine; vigorous rubbing is not. Rubbing can spread the medication into the subcutaneous layer, increase bruising, and worsen soreness.
• Skipping hand hygiene. Infection at injection sites is rare with proper technique but can be serious. Never skip handwashing.

Managing Post-Injection Pain and Discomfort

Some degree of post-injection discomfort is normal, particularly when you are new to self-injecting. The oil-based carrier in testosterone preparations takes time to be absorbed by the muscle, and mild soreness or a small lump at the injection site is common and usually resolves within a few days.

Tips for reducing discomfort:

• Warm the medication slightly before injection. Hold the ampoule or syringe in your hand for a few minutes, or place it in a warm (not hot) pocket. Warmer oil flows more easily through the needle and disperses more readily in the muscle.
• Use the correct needle gauge. A 23–25 gauge needle provides a good balance between comfort and flow rate for most testosterone preparations.
• Inject slowly. This cannot be emphasised enough. Slow injection is the single most effective way to reduce post-injection soreness.
• Gently move the muscle after injection. Light walking or gentle stretching after the injection can help disperse the medication and reduce localised soreness.
• Apply a warm compress. If you have a sore lump at the injection site, a warm flannel applied for 10–15 minutes can help the oil absorb and reduce discomfort.

When to Seek Medical Attention

Most injection site issues are minor and self-resolving. However, you should contact your prescribing clinician or seek medical attention if you experience:

• Signs of infection: Increasing redness, warmth, swelling, or pain at the site that worsens over 48–72 hours; pus or discharge; fever
• Severe or worsening pain: Pain that is significantly worse than your typical post-injection discomfort, or that does not improve within a few days
• Numbness, tingling, or weakness in the leg: This could indicate nerve involvement and should be assessed promptly
• Significant bruising or haematoma: A large or expanding bruise at the injection site
• Allergic reaction: Itching, hives, swelling, or difficulty breathing after injection (rare but requires immediate attention)

Subcutaneous Injection: An Alternative to Glute IM Injection

While this guide focuses on intramuscular gluteal injections, it is worth knowing that subcutaneous (SubQ) injection is an increasingly accepted alternative for testosterone delivery. Subcutaneous injections deposit the medication into the layer of fat just beneath the skin, rather than deep into the muscle.

Advantages of subcutaneous testosterone injection include:

• Shorter, thinner needles (typically 25–29 gauge, 12–16mm) that many men find less intimidating
• Less post-injection pain in most cases
• More injection site options (abdomen, upper thigh fat pad, upper arm)
• Potentially more stable testosterone absorption with fewer peaks and troughs
• Easier for self-administration

Research published in the Journal of Clinical Endocrinology & Metabolism has shown that subcutaneous testosterone injections produce comparable blood levels to intramuscular injections. However, subcutaneous injection is generally only suitable for smaller injection volumes (up to approximately 0.5ml) and is not appropriate for all testosterone formulations (Nebido, for example, must be administered intramuscularly due to its large volume).

Discuss with your prescribing clinician whether subcutaneous injection might be appropriate for your specific TRT protocol.

Frequently Asked Questions

Does injecting testosterone in the glute hurt?

There is typically a brief moment of discomfort as the needle penetrates the skin, which most men describe as a small sharp pinch. The injection itself (pushing the medication in) may cause a feeling of pressure or mild ache. Post-injection soreness for a day or two is common, particularly at the dorsogluteal site. Most men find that the discomfort decreases significantly after their first few injections as they become more confident and their technique improves.

What needle size should I use for glute testosterone injections?

For intramuscular injection at the gluteal site, a 23–25 gauge needle with a length of 25–38mm (1–1.5 inches) is standard. Men with lower body fat may be fine with a 25mm needle, while those with more subcutaneous fat may need a 38mm needle to ensure the medication reaches the muscle. Your clinician will advise on the appropriate size based on your body composition.

Can I inject testosterone into my glute by myself?

Yes. Self-injection is standard practice for men on TRT, and most patients learn to inject confidently within a few sessions. The ventrogluteal site is generally easier to access for self-injection than the dorsogluteal site. If you are new to self-injection, ask your clinic to supervise or guide you through the first few injections until you are comfortable.

How deep should the needle go for a glute IM injection?

For intramuscular injection, the needle should be inserted to its full length (or to the depth advised by your clinician) at a 90-degree angle to the skin. The goal is for the tip of the needle to be within the muscle, not in the subcutaneous fat layer above it. If the needle is too short to reach the muscle (which can occur in men with significant subcutaneous fat at the injection site), the medication will be deposited into fat, reducing absorption and potentially causing a painful lump.

What if I see blood when I aspirate?

If you aspirate and see blood entering the syringe, withdraw the needle, dispose of it safely, and prepare a fresh injection. Attach a new sterile needle to the syringe (you do not need to discard the medication) and inject at a slightly different location. Blood return during aspiration is uncommon at the ventrogluteal site but is not dangerous — it simply means the needle tip has entered a blood vessel, and you should reposition before injecting.

Getting Support with Your Injection Technique

Learning to self-inject is a skill, and like any skill, it improves with practice and proper instruction. If you are prescribed TRT through Evernu, clinical support is available to help you develop confidence with your injection technique. From initial guidance through to ongoing monitoring, Evernu’s clinical team provides the support structure that safe, effective TRT requires. Learn more about Evernu’s testosterone treatment service and how clinical monitoring works alongside your treatment.

The gluteal injection site — particularly the ventrogluteal site — is a safe, effective, and well-established location for testosterone injections. With correct landmark identification, proper technique, and consistent site rotation, self-injection becomes a straightforward part of your TRT routine. The anxiety you may feel before your first injection is entirely normal and almost universally fades after the first few successful administrations.