@harleymeds.com's TRT injection demo, fact-checked

What did @harleymeds.com actually say?

The creator demonstrated a glute injection technique for testosterone replacement therapy, instructing viewers to "split it into quadrants" and aim for "the top outer quadrant," which they called the "ventral glute." They advised to "pinch the skin, poke the needle in, aspirate, pull back on the syringe about a quarter of an inch to make sure there's no blood." The video is straightforward instructional content, not a deep clinical explainer.

The anatomical goal is real: when injecting into the gluteal region, you genuinely want to avoid the sciatic nerve and the superior gluteal artery. Quadrant-based targeting has been standard nursing and clinical instruction for decades. But there are two specific details in this video that deserve a harder look, one terminology error and one outdated safety step that the medical community has been actively arguing about.

Does the science back this up?

The quadrant targeting method is broadly supported, but the specific terminology used here is wrong in a way that matters. The ventral gluteal site is actually a distinct injection site located over the gluteus medius and minimus, accessed near the anterior superior iliac spine, not the top outer quadrant of the traditional gluteal mass. These are two different sites.

A 2016 study by Nicoll and Hesby in the Journal of Infusion Nursing identified the ventrogluteal site as one of the safest intramuscular injection sites due to its distance from major nerves and vessels. The American Nurses Association and WHO injection guidelines both favor the ventrogluteal site over the dorsogluteal site precisely because the latter carries higher sciatic nerve injury risk. The creator appears to be describing the dorsogluteal upper outer quadrant while calling it the ventral glute, which conflates two anatomically distinct sites. That is a real terminology error, not a minor slip.

On aspiration, this is where clinical opinion has shifted significantly. The WHO's 2015 guidelines explicitly state that aspiration is not required for intramuscular injections into the deltoid, vastus lateralis, or ventrogluteal sites. The CDC echoes this for vaccine administration. The dorsogluteal site has more vascular territory nearby, so the aspiration debate is more nuanced there, but recommending aspiration as definitive protocol is now considered outdated by most current guidance.

What did they get wrong (or right)?

Credit where it is due: the principle of quadrant-based targeting to avoid the lower inner gluteal region is correct and safe. Keeping the injection in the upper outer area does meaningfully reduce sciatic nerve risk. That part is not wrong.

But two things stand out as problems. First, calling the dorsogluteal upper outer quadrant the "ventral glute" is incorrect. The ventrogluteal site is a different location entirely, accessed by placing the palm on the greater trochanter and pointing the index finger toward the anterior superior iliac spine. Mixing up these sites is not pedantic, it matters because someone following this video and then searching "ventrogluteal injection" will find instructions for a completely different anatomical approach.

Second, presenting aspiration as a required safety step, "pull back on the syringe about a quarter of an inch to make sure there's no blood," overstates the evidence. Schreiber et al. (2006, Clinical Infectious Diseases) and subsequent reviews have found aspiration unreliable for detecting intravascular needle placement and potentially increases patient discomfort without meaningful safety benefit. Most current clinical guidelines have deprioritized it for IM injections. It is not dangerous to aspirate, but presenting it as a definitive safety check gives false confidence.

What should you actually know?

If you are self-injecting testosterone, the injection site choice matters more than most TRT content admits. The ventrogluteal site, properly identified, is widely considered the safest gluteal IM injection location based on tissue depth, distance from major nerves, and consistent landmark identification. A 2012 study by Nakajima et al. in the Journal of Clinical Nursing confirmed ventrogluteal tissue depth was adequate for IM delivery across a wide range of body compositions.

The upper outer dorsogluteal site the creator is actually describing is usable but carries higher anatomical variability. If you are carrying significant adipose tissue in that region, a standard needle may not reach muscle reliably, which affects testosterone absorption. Needle length selection based on body composition is a real clinical consideration that gets almost no airtime in TRT content.

Aspiration is optional, not required, by current standards. If it makes you feel safer, it is not harmful to do it. But do not treat a clear syringe as a guaranteed green light. Proper site identification and consistent technique are more protective than aspiration alone. Work with a licensed provider to confirm your technique before going solo.