What did @tikdoctony actually say?
The creator, who identifies as a doctor, made three distinct claims: inserting a needle slowly increases pain because "that needle spends more time with the nerves and the skin"; subcutaneous (fat) injections produce equivalent testosterone levels to intramuscular injections; and the abdomen and thigh are the least painful sites because of fat tissue. He also closed with "T is not a requirement to transition," which is a values statement, not a clinical one.
These are not fringe claims. Two of them have real evidence behind them. One of them is more complicated than he made it sound. Let's go through each.
Does the science back up fast needle insertion and slow injection?
Yes, mostly. The idea that rapid skin penetration reduces pain is supported by what we know about nociceptor activation. Slower insertion gives mechanoreceptors and pain fibers more time to fire. The "inject slowly" part for the plunger is also well-supported, particularly for viscous oil-based testosterone formulations.
A 2015 study by Arendt-Nielsen et al. in European Journal of Pain confirmed that injection speed and needle dwell time influence perceived pain intensity. A faster puncture minimizes the activation window for A-delta fibers, which are responsible for that sharp initial sting. Slower plunger depression reduces tissue distension, which is the main driver of deep aching pain during oil-based injections. So when he says "boom, and you're in, and then inject slowly," that's actually a reasonable two-part technique. It's not revolutionary, but it's grounded in how pain physiology works.
What about subcutaneous versus intramuscular testosterone, did he get that right?
This is where things get more nuanced than his clip suggests. He claims subQ injection "doesn't give you any better levels of testosterone than if you inject it into the fat," implying equivalency. That's mostly accurate but oversimplified in a way that could matter clinically.
A 2017 study by Spratt et al. in Journal of the Endocrine Society found that subQ testosterone cypionate produced stable serum testosterone levels comparable to intramuscular administration, with potentially smoother peaks and troughs. A 2021 review by Olsson et al. in Andrology echoed this for gender-affirming HRT populations specifically. However, bioavailability can vary based on injection depth, fat thickness, and the specific ester used. Saying it's simply equivalent flattens real individual variation. SubQ is a legitimate route. It is not identical for every patient. Anyone switching routes should do so with lab monitoring, not just a TikTok tip.
What did he get wrong, or what's missing?
His framing that "muscle hurts" as a blanket statement ignores that proper intramuscular technique, particularly in the ventrogluteal site, is well-tolerated by many patients and remains the clinically established route for depot testosterone formulations. He also doesn't mention that needle gauge and length matter significantly for subQ injections. Intramuscular needles used for subQ delivery can cause unnecessary bruising or missed-depth injections.
There's also no mention of aspiration debate, sterile technique, or the importance of rotating injection sites to prevent lipohypertrophy, a real issue with repeated subQ injections in the same spot. For a 1.9 million-view video aimed at people self-administering testosterone, those omissions are not trivial. Getting the route right but the technique incomplete is still incomplete.
What should you actually know before taking injection advice from TikTok?
The core advice here, fast insertion, slow delivery, subQ as a viable route, is not dangerous or fabricated. But a 60-second demo is not injection training. If you are self-administering testosterone as part of gender-affirming HRT or any other protocol, these are the things that actually matter.
- Needle gauge for subQ is typically 25-27g, not the longer 21-23g needles used for IM. Using the wrong needle changes injection depth and pain profile.
- Rotate sites consistently. Repeated injections in the same spot can cause scar tissue or lipohypertrophy, which affects absorption over time.
- SubQ absorption may produce lower peak levels with slower release. For some patients this is an advantage. For others it may require dose or frequency adjustments confirmed by labs.
- Testosterone is a controlled substance and a prescription medication. Injection technique should be reviewed with a licensed prescriber or pharmacist, not sourced solely from social media.
- The closing line, "T is not a requirement to transition," is a values statement. It is accurate in the sense that transition is individually defined, but it has no clinical bearing on injection technique and its inclusion in a medical demo video conflates two separate conversations.