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Care Path

Low energy, low drive, and what testosterone testing can tell you.

Many men come in because energy, motivation or their sense of feeling like themselves has changed. An evaluation begins with your symptoms, your health history and your laboratory findings — not a package. If therapy is appropriate, the options are explained plainly so you understand how they differ.
Two men walking a bluff trail above the river in autumn
Independent, physician-owned St. Louis men’s health practicePersonal care from a consistent physician-led teamServing St. Louis and the Metro East1062 Old Des Peres Road, St. Louis, MO 63131314-394-1660

Overview

Is this worth evaluating?

Men usually come in because something has changed. These are the concerns most often described at a first visit.

  • Persistent low energy or fatigue that does not resolve with rest
  • Reduced motivation or drive, or a sense of not feeling like yourself
  • Changes in focus, mental clarity or mood
  • Lower sexual desire, or erectile changes
  • Changes in strength, recovery or body composition

Each of these has many possible causes — sleep, medications, thyroid and metabolic conditions, mental health, alcohol, stress and other medical problems among them. None of them, on its own, establishes a diagnosis of low testosterone, and none of them is automatically resolved by treating it. That is what an evaluation is for.

Testosterone and age

Testosterone tends to decline as men age.

In longitudinal research, total testosterone declined about 1.6% per year on average. Free or bioavailable testosterone declined faster, about 2–3% per year. Health, weight, medications and individual biology can change the pattern.

Illustrative age-related trend in total testosteroneA descending line chart. With age 40 indexed to 100, the relative level is 85 at age 50, 72 at age 60, 62 at age 70 and 52 at age 80. The same values are listed in the data table below the chart.50751004050607080AgeRelative levelAge 40 = 100Illustrative population trend
Illustrative age-related trend in total testosterone, indexed to 100 at age 40.
AgeRelative testosterone level
40100
5085
6072
7062
8052
Illustrative index calculated from the 1.6% average annual decline in total testosterone reported in the Massachusetts Male Aging Study. Individual results vary.Massachusetts Male Aging Study, JCEM 2002 (opens in a new tab)Endocrine Society testosterone guidance (opens in a new tab)Endocrine Society 2026 statement (opens in a new tab)

New to TRT or transferring your care

$70 for your first month.

Limited-time TRT offer

$70 first month

New to TRT or transferring your care

Then $140 per month

Laboratory testing is separate. Treatment requires physician evaluation.

Claim Offer

Men new to TRT and men transferring their care to MMI receive 50% off the first month. Beginning with month two, MMI’s flat testosterone therapy price is $140 per month.

  • Flat monthly TRT care

    $70 for your first month at MMI, then $140 per month for your ongoing testosterone care, with no surprise increases.

  • Direct physician access

    Reach your physician by phone or in person upon request as questions come up between visits.

  • Personalized, physician-led treatment

    Your plan is individualized and adjusted over time based on how you feel and what your follow-up labs show.

Less corporate overhead. More focus on how you feel and function.

Labs without unnecessary friction.

Complete five laboratory tests for $50 through MMI’s lab partner connected with the office, or use the laboratory you prefer, including Labcorp or Quest.

Laboratory testing is separate from the monthly cost of care. The physician may order additional testing when it is clinically appropriate for your situation.

Two ways to begin

Already receiving TRT elsewhere? Start or continue without unnecessary delay.

Starting TRT

New to testosterone therapy

Your first visit covers your symptoms, health history, goals and any lab information you already have. Same-day lab testing is available at the office. Treatment can sometimes begin that same day when the physician has the necessary recent laboratory information and determines that testosterone therapy is medically appropriate.

New to TRT? We're making it easy to start and save.

Transferring care

Transfer your testosterone care to MMI.

Bring your recent lab results and details of your current protocol. The physician reviews how you have responded, your safety findings and your goals. When it is medically appropriate, a transition can begin as soon as the first visit.

We’re confident you’ll love us, so we’re making it easy to transfer your care and save.

Care that is easy to work with

  1. 01

    Meet directly with the physician.

  2. 02

    Complete labs the same day or use your preferred lab.

  3. 03

    Start or transition when the physician determines it is appropriate.

Different stages. The same careful standard.

Men come to MMI at different points in adult life, and they describe different things. What does not change is how the evaluation is done. Personal goals — including how you want to feel, function and train — are part of the conversation, but they are not the measure of men's health, and they are not by themselves a reason to prescribe.

A man performing a controlled barbell bench press in a training studio.
Training is one goal some men bring to a visit. It is not the definition of men’s health, and it is not on its own a reason for treatment.

Feeling like yourself again

Younger adult men often describe low energy, reduced motivation, difficulty focusing, changes in sexual desire or a general sense of being off. Some also ask about recovery and body composition. All of it is reasonable to raise with a physician, and all of it is taken seriously.

Training or body-composition goals are not, on their own, a medical indication for testosterone therapy. Plans to father children in the near term are a central part of this conversation, because testosterone can suppress sperm production.

Staying engaged as you age

Later in life, the questions tend to involve energy, sexual health, mental clarity, everyday function, confidence and independence. The goal is to understand what is behind the change rather than to assume a single cause.

Aging on its own does not establish a testosterone deficiency, and FDA-approved testosterone is not approved for low testosterone due to aging alone.

Evaluation

A careful evaluation comes first.

A testosterone evaluation looks at the whole picture before anything is prescribed. Depending on your situation, Dr. Mimlitz may review:

  • Your symptoms and health history
  • Your current medications and supplements
  • Morning testosterone testing, repeated when a single result is not enough to act on
  • Whether another underlying condition could explain what you are experiencing
  • Blood pressure, hematocrit and prostate-health considerations, as appropriate
  • Whether you are planning to father children in the near term

Options

How the options differ

If therapy is medically appropriate, several routes exist. They differ in how they are given, how steady levels tend to be and how quickly a plan can be adjusted. None is presented here as better than another — that decision belongs in the exam room.

Injections

Administered on a schedule

Given at set intervals. Levels and symptom patterns can vary between doses, which is one reason follow-up matters. Follow-up findings help guide any adjustment.

Creams and topicals

Applied regularly

Applied on a regular basis. Absorption varies from person to person. Precautions to avoid skin transfer to a partner or child are part of the instructions.

Pellets

Placed during a minor procedure

Placed under the skin during a minor in-office procedure, with a longer interval between administrations. Once placed, a plan cannot be adjusted as quickly as with other routes.

Safety

Safety, limits and monitoring

Testosterone therapy is a medical treatment with real limits and real monitoring requirements. These are the points that matter most.

  • FDA-approved testosterone products are indicated for men who have low testosterone associated with certain medical conditions. They are not approved for low testosterone due to aging alone.
  • A diagnosis should combine symptoms and signs that fit with laboratory values that are consistently low — not a single number, and not symptoms alone.
  • Testosterone can suppress sperm production. If you are planning to father children, say so before treatment begins; it changes the conversation.
  • Monitoring may include how you are responding, any adverse effects, testosterone level, hematocrit, blood pressure and prostate considerations.
  • In 2025 the FDA required class-wide labeling changes for testosterone products, including a warning about increases in blood pressure.
  • Some medical histories call for added evaluation, closer monitoring, or a different approach altogether. That is discussed individually rather than applied as a blanket rule.

What to expect

What to expect at MMI

Dr. Mimlitz personally conducts every initial evaluation and follow-up visit.

MMI is independent and physician-owned, so the MMI care team coordinating your care knows your plan, communicates clearly and supports consistent follow-through without corporate layers in between. Decisions are individual rather than a standard protocol passed between rotating providers.

  1. 01

    Schedule an evaluation

    Tell us what you are noticing. We schedule a focused visit rather than a rushed one.

  2. 02

    Review symptoms and labs

    Dr. Mimlitz reviews your history, symptoms and lab work with you and explains what they mean.

  3. 03

    Agree on a plan

    If treatment is appropriate, you leave understanding the options, the tradeoffs and the next step.

  4. 04

    Follow through

    Care is adjusted over time based on how you feel and what your follow-up labs show.

Questions to bring to your visit

  • Do my symptoms and my lab results actually point in the same direction?
  • What would you want to rule out before starting anything?
  • How would we decide between the available routes for someone in my situation?
  • What follow-up and monitoring should I plan on?
  • Erectile health

    Erectile changes and testosterone concerns often come up in the same visit, and they are evaluated together.

  • Weight management

    Weight, metabolic health and hormone findings are frequently related.

  • Longevity and healthy aging

    A candid look at what is established in that area and what is not.

Start with an evaluation, not a package.

Call the office to schedule a focused visit with Dr. Mimlitz.

Clinical references

This page is general education, not medical advice, and it is not a substitute for an evaluation. The information here draws on the primary sources below.