15 Questions to Ask Your Doctor Before Starting TRT

1 "How many times have you measured my testosterone, and what time of day?"

Testosterone follows a daily rhythm, peaking in the early morning and falling through the day, and it can swing 20 to 30% between days. A single draw at 3 p.m. is not a diagnosis. The standard is two separate morning draws, ideally before 10 a.m. and while fasting.

What a good answer sounds like: "We have two morning draws two weeks apart and they agree." What should concern you: a diagnosis and a prescription from one afternoon test — or worse, from a symptom questionnaire alone. See what a testosterone of 350 actually means for how much interpretation matters at the margins.

2 "Did we measure free testosterone and SHBG, not just total?"

Total testosterone counts every molecule in your blood, including the large fraction bound tightly to sex hormone binding globulin and unavailable to your tissues. If your SHBG is high, you can have a perfectly respectable total number and still be functionally deficient. If it is low, the reverse.

Ask for total testosterone, free testosterone (calculated from total, SHBG and albumin, or measured by equilibrium dialysis), and SHBG itself. Background: free vs. total testosterone and SHBG explained. This one question explains most cases of normal levels with real symptoms.

3 "What else could be causing my symptoms, and have we ruled it out?"

Fatigue, low libido, brain fog and weight gain are not testosterone-specific. Untreated sleep apnea, thyroid dysfunction, iron deficiency, vitamin D deficiency, chronically elevated cortisol, depression, insulin resistance and heavy alcohol intake all produce the same picture — and several of them lower testosterone as a downstream effect, meaning the low number is the symptom rather than the cause.

A thorough workup includes a thyroid panel, CBC with iron studies or ferritin, A1c or fasting insulin, vitamin D, and a sleep history. If your total testosterone is low, LH and FSH should also be drawn to distinguish primary testicular failure from a pituitary or hypothalamic cause — and a very low testosterone with low LH warrants a prolactin check to rule out a pituitary adenoma. See why men run out of energy for the full differential.

4 "What baseline labs are you drawing before my first dose?"

You cannot interpret a change you never measured. Before treatment starts, you want on record: total and free testosterone, SHBG, sensitive estradiol, LH and FSH, a complete blood count (for baseline hematocrit and hemoglobin), a comprehensive metabolic panel, a lipid panel, PSA if you are 40 or older or have prostate risk factors, and blood pressure documented properly. If fertility is on the table, a semen analysis before you start is invaluable and almost never offered unless you ask. Our full TRT bloodwork guide covers what each marker tells you.

5 "Which delivery method are you recommending for me, and why that one?"

Weekly or twice-weekly testosterone cypionate from a vial, daily transdermal cream or gel, and long-acting undecanoate all have real trade-offs: cost, stability of blood levels, skin transfer risk with topicals, absorption variability, and how easily a dose can be adjusted. The right answer is specific to you — your SHBG, your schedule, your sensitivity to peaks and troughs, your comfort with the routine.

Listen for reasoning, not a default. "This is what we put everyone on" is a weaker answer than "your SHBG is low so I want smaller, more frequent dosing to avoid a high peak."

6 "What starting dose, and what range are you aiming my levels into?"

You should leave knowing your dose, your frequency, and the target trough range your provider is steering toward. Guidelines generally aim for the mid-normal range for healthy young men, using the lowest dose that resolves symptoms. Chasing a supraphysiologic number is not therapy; it adds side effects without adding benefit.

Also ask how quickly they adjust. Testosterone cypionate takes roughly five to six weeks to reach steady state, so a dose change at week two is guessing. Your first month should mostly be about holding the protocol steady.

7 "Do you plan to prescribe an aromatase inhibitor, and under what conditions?"

This is the question that separates a careful clinic from a template clinic. Some testosterone converts to estradiol, and men need estradiol — for bone density, libido, mood and joint comfort. Reflexively prescribing anastrozole alongside testosterone is one of the most common errors in the field, and crushing estradiol reliably produces joint pain, low libido, flat mood and brain fog.

A good answer: "Only if you develop genuine symptomatic high estradiol that does not resolve with a dose or frequency adjustment, and only with a sensitive estradiol assay confirming it." A concerning answer: "Everyone takes it." Read estradiol on TRT and TRT and gynecomastia before agreeing to one.

8 "What will this do to my fertility, and what are my options?"

Ask this even if you are certain you are done having children — plans change, and this decision is difficult to reverse quickly. Exogenous testosterone suppresses LH and FSH, which suppresses sperm production; a substantial share of men become severely oligospermic or azoospermic within months. Recovery after stopping is common but can take many months and is not guaranteed, particularly with longer duration of use and older age.

Options to raise: sperm banking before you start, adding hCG or gonadorelin to maintain testicular signaling (gonadorelin vs. hCG), or choosing a fertility-sparing alternative such as clomiphene or enclomiphene instead of testosterone (TRT vs. clomid). Full detail: TRT and fertility.

9 "What is the follow-up lab schedule, and is it included?"

Testosterone therapy is safe because it is monitored. A reasonable cadence is labs at roughly six to eight weeks after starting or after any dose change, again at three to six months, then every six to twelve months once stable — with hematocrit, estradiol, and PSA (where applicable) tracked alongside testosterone. Ask specifically whether follow-up testing is included in your monthly cost or billed separately, and who reviews the results with you.

Walk away from any provider who will ship testosterone without scheduled follow-up labs. Unmonitored therapy is where the actual risk lives.

10 "Which side effects should I expect, and which mean I call you immediately?"

You want a clear two-column answer. Expected and manageable: mild water retention in the first weeks, acne or oilier skin, some early mood variability, mild application-site irritation with topicals. Call promptly: escalating chest tenderness or swelling, calf pain or swelling, chest pain or shortness of breath, worsening snoring or witnessed apneas, persistent headaches, blood pressure climbing above your normal, or new urinary symptoms.

Also ask about hair loss if you are genetically predisposed, and about blood pressure — testosterone products carry a labeled warning for blood pressure increases, so having a home cuff and a baseline reading matters.

11 "Given my history, what are my specific contraindications and risks?"

This should be a personalized answer, not a generic disclaimer. Absolute or strong cautions include active prostate or breast cancer, an unevaluated elevated PSA or prostate nodule, hematocrit already above roughly 50 to 54%, untreated severe sleep apnea, uncontrolled heart failure, a recent cardiovascular event, active desire for near-term conception, and untreated severe lower urinary tract symptoms.

On cardiovascular safety, the large randomized TRAVERSE trial found that testosterone therapy in middle-aged and older men with hypogonadism and cardiovascular risk factors did not increase major adverse cardiac events versus placebo, though it did show higher rates of atrial fibrillation, pulmonary embolism and acute kidney injury — which is exactly why history and monitoring matter. See TRT and heart health and TRT and prostate health.

12 "How do I reach a clinician between visits, and how fast?"

Month two, something will feel off and you will want an answer that week, not next month. Ask concretely: Is there messaging with a licensed clinician or only support staff? What is the typical response time? Can you get a same-week lab order if something changes? Who covers evenings and weekends? Is it the same provider each time, or whoever is on rotation?

13 "What is the true all-in monthly cost?"

Get the total, not the headline number: consultation fee, monthly membership, medication, supplies, baseline labs, follow-up labs, any ancillary medications, and shipping. Ask whether the price changes after an introductory period, whether labs are billable to insurance, and whether you can use an HSA or FSA. Compare against the major online TRT clinics before committing.

14 "How does this work practically — pharmacy, refills, travel, and if I move?"

Testosterone is a Schedule III controlled substance in the United States, which shapes everything logistical: prescriptions cannot be refilled indefinitely, telehealth prescribing rules and state licensure limit where your provider can treat you, and shipping and travel need planning. Ask which pharmacy dispenses, how refills are authorized, what happens if a shipment is delayed, whether they are licensed in states you might move to, and how to travel with medication and documentation.

15 "What happens if I want to stop?"

Any clinic worth joining will answer this honestly. Stopping means your suppressed natural production has to restart, and the interval in between can involve a stretch of symptoms worse than your baseline — fatigue, low mood, low libido — lasting weeks to months. Ask whether they support a structured taper or restart protocol, what that looks like, and what recovery timeline they typically see. A provider who has no plan for stopping has not thought carefully about starting.