The Hormone Hub

No fluff. Just facts. The Hormone Hub delivers expert guidance on hormones, weight loss, and optimization to help you feel your best.

inject testosterone

Benefits of Subcutaneous Administration of TRT

February 13, 20253 min read

An insulin needle surrounded by several vials of medication. Click the link for more information regarding hormone replacement therapy for men and women between the ages of 30 and 65 suffering from low testosterone in Pueblo Colorado.

There is more than one way to skin a cat and there is also more than one way to inject testosterone replacement therapy (TRT). It be administered in several ways, including subcutaneously (under the skin), which is becoming an increasingly popular method. Traditionally, TRT has been given intramuscularly (into the muscle), but subcutaneous injections offer a viable alternative with several benefits. Here’s how subcutaneous TRT works and why it might be preferred by some patients:

What Is Subcutaneous TRT?

  • In subcutaneous TRT, testosterone is injected into the fatty tissue beneath the skin rather than directly into the muscle (as is the case with intramuscular injections).

  • Common injection sites for subcutaneous injections include the abdomen or thighs.

Benefits of Subcutaneous TRT:

  • Less Pain and Discomfort: Injecting into the fatty tissue is generally less painful than intramuscular injections, which often require larger needles and can lead to soreness or discomfort.

  • Reduced Injection-Site Irritation: Subcutaneous injections tend to cause less irritation, bruising, and inflammation compared to intramuscular injections, particularly with long-term use.

  • Smaller Needles: The needles used for subcutaneous injections are typically smaller, which makes the injection process less intimidating and easier for self-administration.

  • More Stable Hormone Levels: Some studies suggest that subcutaneous injections may result in more stable and consistent testosterone levels compared to intramuscular injections, which can sometimes cause peaks and valleys in hormone levels.

Absorption of Testosterone:

  • Absorption rates of testosterone can vary depending on whether it is injected intramuscularly or subcutaneously. While intramuscular injections provide a more direct route for testosterone absorption, subcutaneous injections still effectively deliver the hormone into the bloodstream.

  • Some users report slower, more sustained absorption with subcutaneous injections, which can contribute to more consistent testosterone levels and fewer hormonal fluctuations.

Efficacy of Subcutaneous TRT:

  • Studies and clinical experiences have shown that subcutaneous TRT is just as effective as intramuscular TRT in raising testosterone levels to within the desired therapeutic range. It offers a viable alternative for men who prefer to avoid the discomfort or inconvenience of intramuscular injections.

  • Testosterone esters like testosterone cypionate or testosterone enanthate are commonly used for subcutaneous injections and perform well with this method.

Side Effects of Subcutaneous TRT:

  • While generally well-tolerated, some patients may experience mild irritation or lumps (lipohypertrophy) at the injection site due to the buildup of testosterone in the fatty tissue. However, these side effects are typically mild and can be reduced by rotating injection sites.

  • Other potential side effects of TRT (regardless of administration method) include acne, increased red blood cell count, and mood changes. These side effects are typically related to overall testosterone levels and not specific to subcutaneous injections.

Conclusion:

Subcutaneous administration of TRT is a convenient, effective, and less painful alternative to traditional intramuscular injections. It offers stable testosterone levels with fewer side effects related to the injection process, making it a preferred method for some patients. As with any treatment, it’s essential to work with a healthcare provider to determine the best administration method for individual needs and preferences.

Steel City Men’s Health and Testosterone is a clinic that provides safe and affordable testosterone replacement therapy (TRT) and weight loss to men and women in Pueblo, Colorado. If you have any questions or would like to schedule an appointment to discuss treatment don't hesitate to call, text, or email [email protected] or (719) 669-4223. 

Driven by purpose and backed by clinical expertise, I specialize in helping men and women regain control of their health through personalized hormone replacement therapy, medical weight loss, and testosterone optimization. I founded Steel City HRT & Weight Loss with one mission: to empower people to become the hero of their own story. I believe in root-cause solutions, not quick fixes—whether that means restoring hormonal balance, improving energy levels, or helping patients feel confident in their own skin. Every treatment plan is tailored, compassionate, and built on trust. Your journey back to feeling strong, focused, and alive starts here.

Jeremiah Velasquez

Driven by purpose and backed by clinical expertise, I specialize in helping men and women regain control of their health through personalized hormone replacement therapy, medical weight loss, and testosterone optimization. I founded Steel City HRT & Weight Loss with one mission: to empower people to become the hero of their own story. I believe in root-cause solutions, not quick fixes—whether that means restoring hormonal balance, improving energy levels, or helping patients feel confident in their own skin. Every treatment plan is tailored, compassionate, and built on trust. Your journey back to feeling strong, focused, and alive starts here.

LinkedIn logo icon
Instagram logo icon
Youtube logo icon
Back to Blog

© Copyright 2026 Steel City HRT & Weight Loss. All rights reserved. Designed by Topline