Maybe a friend at the gym brought it up. Maybe it came up on a podcast, or the same three ads keep finding you on Instagram. Testosterone therapy is having a moment, and a lot of men arrive at the idea long before they arrive at a provider. If you have already worked out that ordering vials from a website is a bad idea, good. The harder question comes next: what does real testosterone care actually involve, and how do you tell a legitimate program from one that is simply selling you a prescription? Here is what the process looks like when it is done properly.
Key Takeaways
- Low testosterone is diagnosed from symptoms and lab work together, not from a number alone.
- Professional guidelines call for two separate early-morning blood draws before a diagnosis, not a single test.
- A proper workup looks past total testosterone, including luteinizing hormone, hemoglobin and hematocrit, and a PSA for men over 40.
- Monitoring is part of the treatment, not an optional add-on.
- A program that sells you testosterone before it has diagnosed you is the clearest warning sign there is.
Why “Just Get Me On Testosterone” Is the Wrong Place to Start
The symptoms that send men looking for testosterone are real: flat energy, low libido, losing ground in the gym, a mood that has gone grey, thinking that feels a step slower than it used to. The trouble is that those symptoms are not specific to testosterone. Plenty of other things produce the same list, and treating the wrong one costs you months.
This is exactly why the American Urological Association defines testosterone deficiency as low testosterone levels combined with symptoms or signs, rather than either on its own.1 A number without symptoms is not a diagnosis. Symptoms without a number are not either. A provider who skips one half of that is not doing the job.
The Workup: One Number Is Not a Diagnosis
If you take one thing from this article, make it this. The guideline calls for two total testosterone measurements, taken on separate occasions, with both drawn in the early morning.1 Testosterone is not a steady number through the day, so a single convenient afternoon draw is not a sound basis for putting a man on lifelong therapy. The guideline uses a total testosterone below 300 ng/dL as a reasonable cut-off supporting the diagnosis.1
Total testosterone is also only the opening question. Here is what a real workup covers and why each piece is there:
| What is measured | Why it is there |
|---|---|
| Total testosterone, twice, early morning | The primary measure. Two separate draws, both early in the day.1 |
| Luteinizing hormone (LH) | Helps show where the problem originates. A strong recommendation in the guideline.1 |
| Prolactin | Checked when LH comes back low or low-normal.1 |
| Hemoglobin and hematocrit | Measured before treatment and followed during it.1 |
| PSA (men over 40) | Checked before therapy begins.1 |
| Free testosterone and estradiol | Not routinely required by the guideline, ordered on clinical context. We run them as part of a fuller picture. |
That last row is worth being straight about. The guideline treats free testosterone and estradiol as optional rather than mandatory. We include them because they help explain cases where the total number and the way a man feels do not line up. That is a choice we make, not a rule we are following.
How the Dose Actually Gets Decided
Once there is a diagnosis, the next decision is how testosterone is delivered and at what dose. Most programs begin with injectable testosterone cypionate or enanthate given weekly, because that is the option that allows the dose to be adjusted precisely from week to week as follow-up labs come back.
Delivery method is a separate decision from the diagnosis, and it is genuinely yours to weigh. Weekly injections, pellets placed every 3 to 4 months, and a daily topical gel all deliver testosterone, and they differ in convenience, control, and cost. We break the trade-offs down in pellets vs injections vs creams, and if you have run into the phrase “synthetic testosterone” and wondered what it means, bioidentical vs synthetic hormones covers that specifically.
What Ongoing Monitoring Looks Like
Testosterone therapy is not a prescription you collect and forget. The guideline calls for testosterone levels to be measured every 6 to 12 months while a man is on therapy.1 At Florida Aesthetics and Wellness we check labs quarterly, more often than the guideline minimum, because catching a drifting number early is easier than unwinding a problem later.
Monitoring is also where being a physical clinic matters. Our patients come in, get assessed, and have their dose adjusted by a board-certified anti-aging specialist who has been watching their numbers over time. That is a different relationship from a questionnaire and a shipment.
Red Flags: When to Walk Away
If you are comparing programs, these are the things that should stop you:
- No baseline labs at all. If nobody drew blood before offering you testosterone, nothing that follows is a diagnosis.
- One blood draw, or an afternoon draw. The guideline asks for two, both early morning.1 One convenient test is a shortcut taken at your expense.
- Treatment offered before diagnosis. If the product was on the table before your results were, you are being sold to, not treated.
- No PSA check and you are over 40. The guideline calls for it before therapy begins.1
- No plan for follow-up labs. A program with no monitoring schedule has not thought past your first payment.
- You never speak with a provider. Dose decisions belong to someone who is accountable for them.
Worth saying plainly: the men who end up buying testosterone from grey-market sources usually did not set out to. They wanted help, ran into a system that felt slow or dismissive, and found something faster. We have written separately about what circulates on the black market and why it is genuinely dangerous. The answer to a bad option is a good one, not no option.
We’re Here When You’re Ready
If the symptoms sound familiar, the honest first step is a proper workup, and that is true whether you end up on testosterone or not. Sometimes the labs point somewhere else entirely, and finding that out is a good outcome too.
You can read more about low testosterone in men and how testosterone replacement therapy works at our practice, including a full comparison of delivery methods and what each one costs.
Florida Aesthetics and Wellness has been caring for patients in Brandon since 2006, and offers complimentary consultations to Brandon and the greater Tampa Bay area, including Tampa, Riverview, Valrico, and Plant City.
Call us at (813) 345-4044, email info@floridaaesthetics.com, or book online.
Our Brandon, FL office is open Monday, Tuesday, Thursday, and Friday 8:00 AM – 5:00 PM, and Wednesday 10:00 AM – 7:00 PM.
Frequently Asked Questions
How is low testosterone actually diagnosed?
It is diagnosed with symptoms and lab work together, not either one alone. Professional guidelines define testosterone deficiency as a low total testosterone level combined with symptoms or signs, and they use a total testosterone below 300 ng/dL as a reasonable cut-off supporting the diagnosis.
Do I really need more than one blood test?
Yes. The American Urological Association guideline calls for two total testosterone measurements taken on separate occasions, with both drawn in the early morning. Testosterone is not a stable number through the day, so a single afternoon draw is not a sound basis for a diagnosis.
What labs should be checked before starting testosterone therapy?
Beyond two early-morning total testosterone measurements, the guideline calls for measuring luteinizing hormone, and prolactin when luteinizing hormone is low or low-normal. It also calls for hemoglobin and hematocrit, and a PSA in men over 40 before treatment begins. Free testosterone and estradiol are not routinely required by the guideline and are ordered based on clinical context. At Florida Aesthetics and Wellness we include them as part of a fuller picture.
How often should I be monitored once I am on TRT?
The guideline calls for testosterone levels to be measured every 6 to 12 months while on therapy. At Florida Aesthetics and Wellness we check labs quarterly, which is more frequent than the guideline minimum, because it lets us adjust sooner rather than later.
What are the warning signs of a testosterone program to avoid?
The clearest one is being sold testosterone before anyone has diagnosed you. Others include no baseline labs at all, a diagnosis made from a single blood draw or an afternoon draw, no PSA check if you are over 40, no plan for follow-up labs, and never speaking with a provider face to face.
How do I get started in Brandon, FL?
Florida Aesthetics and Wellness offers complimentary consultations and serves Brandon and the greater Tampa Bay area, including Tampa, Riverview, Valrico, and Plant City. Call (813) 345-4044, email info@floridaaesthetics.com, or book online. Our office is at 1767 S. Kings Ave., Brandon, FL 33511.
Sources
- American Urological Association. Evaluation and Management of Testosterone Deficiency (2018, reviewed and validity confirmed 2024). auanet.org. Source for the two early-morning measurements, the 300 ng/dL cut-off, the symptoms-plus-labs definition, the LH, prolactin, hemoglobin/hematocrit and PSA recommendations, and the 6 to 12 month monitoring interval.
- Khera M, Hotaling JM, Miner M. Testosterone deficiency and treatments: common misconceptions and practical guidance for patient care. Sex Med Rev. 2025;13(3):373-380.
- TESTOSTERONE ENANTHATE injection, solution. Hikma Pharmaceuticals USA Inc. DailyMed, U.S. National Library of Medicine.
This article is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment, and individual results vary. Testosterone therapy is not appropriate for everyone. Consult a licensed provider to determine what is appropriate for your situation.