TRT And Surgery: How To Time Your Treatment Protocol

TRT and surgery timing is a case-by-case medical decision, not a fixed rule. Whether testosterone therapy is paused before a procedure depends on the type of operation, your lab values, and the judgment of both your surgeon and the clinician who manages your prescription. Some studies link recent testosterone use to higher rates of blood clots and other postoperative complications, but pausing is not automatically required for every patient.

Testosterone is a Schedule III medication prescribed for diagnosed hypogonadism, so any change around an operation belongs with a licensed clinician rather than a self-directed guess. A direct-pay telehealth provider can coordinate prescription hormone care with a surgical team once a procedure is on the calendar.

TRT and surgery timing refers to whether and when testosterone is paused before an operation and restarted afterward. The decision weighs the drug's effect on red blood cell concentration and clotting against the patient's symptoms, and current guidelines favor individual assessment over a single universal protocol.

What Does TRT And Surgery Timing Involve?

TRT and surgery timing is the perioperative plan for a patient already on testosterone: whether to hold the next dose, how long to hold it, and when to resume after the wound has healed. Guideline bodies do not publish one fixed schedule, because injectable and transdermal forms clear the body at different rates and every procedure carries a different clot and bleeding profile.

The reason timing comes up at all is physiological. Testosterone raises the concentration of red blood cells, and it can influence blood pressure and tissue recovery. Surgeons weigh those effects against the reason the medication was prescribed in the first place, which is a diagnosed deficiency confirmed by lab testing and symptoms, per the AUA guideline (Mulhall et al., 2018).

Because that trade-off is specific to each person, the plan is set by the surgical team and the prescribing clinician together, using the patient's own total and free testosterone results and recent bloodwork.

Why Testosterone Affects Surgical Risk

Testosterone changes two things that matter in an operating room: how thick the blood is and how the body manages pressure and healing. Neither effect automatically makes surgery unsafe, but both influence how a surgeon assesses procedural risk.

Blood thickness and clot risk

Testosterone stimulates red blood cell production, which raises hematocrit, the percentage of blood volume made up of red cells. Higher hematocrit thickens the blood and can raise the risk of a clot, so clinical guidelines flag a hematocrit above 54% as the point to pause therapy and evaluate the cause (Bhasin et al., 2018).

That clotting concern is not only theoretical. In the randomized TRAVERSE trial of 5,246 men with hypogonadism and cardiovascular disease or high risk, testosterone was no worse than placebo for major adverse cardiac events, yet the testosterone group had higher rates of atrial fibrillation, acute kidney injury, and pulmonary embolism (Lincoff et al., 2023). A pulmonary embolism is a clot in the lung, and the postoperative period is already a higher-risk window for clots.

Wound healing, blood pressure, and recovery

A portion of testosterone converts to estrogen through aromatization, and shifts in estradiol levels can drive fluid retention that complicates recovery. The medication can also raise blood pressure. In February 2025 the FDA updated labeling across all testosterone products, removing the boxed warning about major adverse cardiac events based on TRAVERSE data while adding a new warning about blood pressure increases (FDA, 2025). The secondary cardiovascular signals from that trial remain under evaluation. Blood pressure control is part of a safe operation, which is one more reason the surgical team wants the full picture.

What The Research Shows About Testosterone And Surgery

Evidence on testosterone and surgery is mixed, and most of it is observational. The strongest data come from TRAVERSE, a randomized trial, while the surgery-specific findings come from retrospective studies that can show association but not cause.

A propensity-matched analysis of 13,250 knee-replacement patients found that testosterone use before total knee replacement was associated with higher 90-day rates of pulmonary embolism, pneumonia, acute kidney injury, and sepsis, along with higher rates of infection and revision surgery over five years (Omurzakov et al., 2026). A separate study of male rotator cuff repair patients flagged prior testosterone use as a possible risk factor for complications and repeat surgery (Johnson et al., 2025).

These are associations from database reviews, so they cannot prove that testosterone caused the complications, and findings are not uniform across every procedure. They do explain why many surgeons ask about it.

Should You Stop Testosterone Before Surgery?

There is no universal answer, and no reputable guideline sets one cutoff that applies to everyone. Many surgeons ask patients to hold testosterone for a period before certain operations because of the clot signal described above, while others continue it when the procedure is low-risk and the patient's hematocrit is well controlled.

The right call depends on the surgery, the patient's most recent hematocrit, personal and family clot history, and how the medication is delivered. Those variables are what a surgeon and prescriber review together.

What matters most is that the decision is made with your care team, not on your own. Any change to your protocol should be guided by your care team so the surgical plan and symptom management stay aligned, and continuing without telling your surgeon removes information they need to plan safely.

Timing Your Protocol Around A Procedure

Because testosterone formulations clear at different rates, any pause is planned around the specific ester and delivery method rather than a one-size date. Injectable cypionate and enanthate stay active longer than a daily transdermal dose, and creams and injections follow different schedules, so the "when" is always tied to the product a patient uses.

A practical sequence looks like this, and each step is directed by a clinician rather than self-managed:

1. Tell the surgeon that testosterone is part of your regimen, and name the exact formulation and dose.

2. Check a recent hematocrit and blood pressure so the surgical team has current numbers.

3. Follow the provider's instruction on whether to hold a dose and for how long, based on your labs and the procedure.

4. Resume only when your clinician confirms the wound and your recovery support it.

Personalized targets, doses, and restart dates are set during a clinical evaluation, not from an article. The purpose here is to explain the moving parts so the conversation with your care team is a better one.

How Does Marek Health Approach TRT And Surgery?

Marek Health is a telehealth provider, so its clinicians manage testosterone therapy through lab testing and follow-up rather than in a walk-in setting. When a patient has surgery coming up, that model allows current bloodwork to be shared with a surgical team and a plan to be adjusted when it is medically appropriate.

Marek Health's providers monitor the markers that matter around a procedure, including hematocrit, PSA, estradiol, and blood pressure, and they track metabolic health markers alongside hormone levels. Testosterone is a Schedule III medication, so a prescription is issued only after evaluation by a licensed clinician and only when medically appropriate, where permitted by state law.

That framework keeps the surgeon and the prescriber working from the same data, which is the point of coordinated perioperative care.

Preparing For Surgery While On Testosterone Therapy

Preparation starts with disclosure and current labs. Bring your surgeon the name of your medication, the dose, how often you take it, and the date of your last injection or application, because that history drives the timing decision.

Ask for a recent hematocrit before the procedure, since a value above 54% is the level guidelines treat as a reason to pause and investigate (Bhasin et al., 2018). If you also want a refresher on the biomarker itself, a plain-language guide to how testosterone works can help you follow the conversation.

Disclaimer: This blog post is intended for informational purposes only and should not be considered medical advice. Always consult a healthcare professional before making changes to your health routine.

FAQs

Testosterone treats a diagnosed deficiency; it is not a performance product, and it does not guarantee any surgical outcome. Handled with your surgeon and prescriber together, TRT and surgery can be timed so the treatment plan accounts for procedural risk.

What is the safest way to handle TRT and surgery?

The safest approach is to disclose your testosterone use to your surgeon early, confirm a recent hematocrit, and let your prescribing clinician and surgical team decide together whether to hold a dose. There is no single universal rule, so the plan is built around your labs and the specific procedure.

Does testosterone increase the risk of blood clots during surgery?

Testosterone raises red blood cell concentration, which can thicken the blood, and a large randomized trial of men with cardiovascular disease or high risk reported more pulmonary embolisms in the testosterone group than in those on placebo. The postoperative period already carries a higher clot risk, so surgeons factor testosterone use into their planning.

How long before surgery should you stop testosterone?

There is no fixed number that applies to everyone. The timing depends on which testosterone formulation you use, since long-acting injectables clear more slowly than daily transdermal doses, along with your hematocrit and the type of procedure. Your clinician sets the interval based on those factors.

Can you stay on TRT if your surgery is minor?

Sometimes, yes. For lower-risk procedures with well-controlled hematocrit, some surgeons allow testosterone to continue, while higher-risk operations more often call for a pause. That judgment belongs to your surgeon and prescriber, not to a general guideline.

When can you restart testosterone after an operation?

You restart only when your clinician confirms your recovery supports it. The timing reflects how the wound is healing and your overall postoperative status, which is why the restart date is set during follow-up rather than scheduled in advance.

Why is TRT and surgery timing important to your surgeon?

Testosterone affects hematocrit, blood pressure, and clot risk, and observational studies have linked recent use to higher postoperative complication rates in some procedures. Sharing your TRT and surgery timeline lets the surgical team plan monitoring and clot prevention accurately.

References

• Class-wide labeling changes for testosterone products. U.S. Food and Drug Administration; 2025.

• J Arthroplasty. 2026;41(7):2056-2061.

• J Clin Endocrinol Metab. 2018;103(5):1715-1744.

• J Urol. 2018;200(2):423-432.

• JSES Int. 2025;10(1):101400.

• N Engl J Med. 2023;389(2):107-117.