What did @gooo_tw_ actually say?
The creator walked through their personal testosterone injection routine, covering needle gauge selection, injection site rotation, and sterile practice. They prefer a "29 gauge" needle, citing reduced scar tissue formation over time. They rotate through ventrogluteal, quad, lat, and delt sites on both sides for roughly eight injection locations. They close with a firm stance on sterile technique, calling needle reuse "the stupidest thing I've ever heard of." The framing is clearly competitive bodybuilding, not clinical TRT, which matters a lot for how you read this advice.
Worth flagging: the transcript contains multiple speech-to-text artifacts suggesting the creator is working from a poorly auto-captioned video. That is a real problem when 92,000 people are potentially learning injection technique from this content.
Does the science back this up?
On needle gauge and scar tissue: the creator is directionally correct but oversimplified. Thinner needles do produce smaller tissue trauma per puncture, and repeated injections do cause fibrosis over time. However, a 29-gauge needle with oil-based testosterone formulations significantly increases injection time and raises the risk of incomplete delivery due to viscosity. Most clinical protocols for testosterone cypionate or enanthate use 23-25 gauge intramuscular needles, not 29.
Site rotation has genuine support. Intramuscular injection site rotation is standard in clinical guidance to reduce localized fibrosis. Research on injection site rotation in hormone delivery contexts, including work by MacGillivray et al. (2004, Pediatrics) on growth hormone injections, shows measurable tissue differences with consistent rotation versus single-site use. The principle extends to testosterone. An eight-site rotation plan is clinically reasonable, even if the creator's motivation is stage aesthetics rather than medical necessity.
What did they get right, and what did they miss?
They got sterile technique right. Needle reuse is genuinely dangerous, associated with abscess formation, local infection, and in serious cases, systemic septicemia. The creator's bluntness here is appropriate and accurate.
The 29-gauge recommendation is where things get shaky. For standard oil-based testosterone formulations like cypionate in sesame or cottonseed oil, a 29-gauge needle is not endorsed in clinical or compounding pharmacy guidance. Some practitioners use 27-gauge as a workable compromise for patients doing frequent small-volume injections, but this requires clinical oversight. The video also skips injection speed, aspiration practice, and how to manage site reactions, all relevant for someone actually learning this procedure.
The brief mention of subcutaneous injection and abdominal "lumps" is framed purely as a cosmetic issue. That misses the point. Subcutaneous lumps can indicate lipohypertrophy or poor technique, which affects drug absorption, not just how someone looks on stage.
What should you actually know?
This video is describing a competitive bodybuilding injection protocol, not supervised TRT. Those are different contexts with different risk profiles. If you are on a medically supervised testosterone protocol, your prescribing provider should be guiding needle selection, site rotation, and technique. This video is not a replacement for that conversation.
Sterile practice is non-negotiable regardless of context. The CDC reports thousands of preventable hospitalizations annually linked to injection-related infections. The creator is right to emphasize this, even if the broader framing of the video sits outside a supervised medical setting.
If you have questions about your testosterone protocol, injection site management, or scar tissue concerns, bring them to a licensed provider. FormBlends connects patients with board-certified clinicians who can review your specific situation.