Tired, flat and losing drive: when low testosterone is worth testing for

When testing makes sense

Common signs of low testosterone in men include lower sex drive, loss of muscle mass, fatigue that does not lift, lower motivation and slower recovery from workouts. Because almost all of these can also come from poor sleep, stress, weight gain, other medical conditions or medications, symptoms alone cannot confirm low testosterone. If several of them have lasted for weeks or months, the reasonable next step is a morning blood test ordered by a licensed provider, ideally as part of a broader look at your health.

I am Jennifer Simon, BSN, RN, RFNP, Chief Operating Officer of ReGen & Aesthetics Concierge of Texas in Dallas. Our nurse practitioners see many men who describe the same thing: they are not sick, but they are not themselves. This guide is general information about how that complaint is evaluated. It is not medical advice, and only a provider who has examined you and reviewed your labs can tell you what your results mean.

The signs men actually describe

MedlinePlus, the National Library of Medicine's consumer health site, lists low sex drive and loss of muscle mass among the symptoms that lead a provider to test testosterone in adult men, along with infertility, enlarged breasts, less facial or body hair, and bone thinning or anemia with no known cause. In our consultations, men also often describe the softer signs that bring them in long before anything shows up on a scan.

None of these on its own means your testosterone is low. What matters is the pattern, how long it has lasted, and whether something else explains it.

• Lower interest in sex, or changes in sexual function
• Fatigue despite reasonable sleep, caffeine and exercise
• Losing muscle or strength while body fat rises
• Workouts that take much longer to recover from
• Brain fog, lower focus or afternoon energy crashes
• Irritability, flatter mood or less confidence

Why the same symptoms have so many possible causes

Testosterone does not work in isolation. Sleep, thyroid function, blood sugar, body weight, alcohol, stress, depression and many common medications can all produce fatigue, low drive and weight gain. MedlinePlus notes that testicle problems, liver or kidney disease and pituitary disorders can lower testosterone, and that some medicines affect levels. A low result is a finding to understand, not just a number to replace.

Sleep deserves special mention. A man sleeping five broken hours a night will feel exhausted and unmotivated whatever his hormones are doing. If tension, headaches and poor sleep are part of your picture, it may be worth reading this guide on tension, headaches and sleep that keep coming back alongside this one.

It is also normal for testosterone to decrease with age, as MedlinePlus points out. That is why a careful provider looks at your symptoms, your results and your overall health together rather than treating every man over a certain age the same way.

How the blood test works

Testosterone is measured with a blood draw. MedlinePlus explains that the sample is usually taken in the morning, between 7 and 10, because that is when levels are typically highest. Some tests require fasting for several hours, and you should tell your provider about every medication and supplement you take, since some can affect the result. Because a single result can be influenced by the time of day, a recent illness or a bad night's sleep, providers may repeat a test before drawing conclusions.

A testosterone number alone tells only part of the story. In our practice, a men's hormone workup looks at total and free testosterone along with related markers such as SHBG, estradiol, LH and FSH, DHEA, prolactin, thyroid function, vitamin D and PSA. Each one answers a different question: whether the body is making testosterone, whether it is available to tissues, why it might be low, and whether therapy would be safe to consider.

• Schedule the draw for early morning
• Ask whether you need to fast
• Bring a full list of medications and supplements
• Avoid testing in the middle of an illness if you can
• Ask for copies of your results so you can track them over time

How to describe what is going on so the visit is useful

Men often understate symptoms at a first visit, especially the ones that feel personal. A provider can only work with what you tell them, so it helps to arrive with notes rather than relying on memory in the moment.

Think back to when you last felt like yourself and what has changed since. Note how you are sleeping and for how long, how much alcohol and caffeine you drink, how often you train and how you recover, and any changes in sexual interest or function. List every medication and supplement, including anything bought online or through a gym, because some products affect hormone levels and lab results. If you have had testosterone or other labs drawn in the past, bring the reports so trends can be compared.

Be specific about what you want to be different. 'More energy' is a start. 'I want to get through the afternoon without crashing and feel like training again' gives your provider something concrete to measure progress against.

• When the changes started and what else changed around then
• Sleep hours and quality
• Alcohol, caffeine and training habits
• All medications and supplements, with doses
• Previous lab reports
• Whether you may want children in the future

When to go to your primary care provider first

Some symptoms are not hormone questions. Chest pain, shortness of breath, fainting, sudden severe headaches, unexplained weight loss, a lump in a testicle, new vision changes or thoughts of self-harm need prompt medical attention from your primary care provider, an emergency department or a crisis line. The same goes for anyone with a known heart, liver, kidney or pituitary condition: your existing doctors should be part of any decision about hormones.

For the slow, cumulative picture of low energy, low drive and feeling unlike yourself, a hormone evaluation is a reasonable step. In that case, the workup should start with a full history and labs, not with a prescription.

If your levels do turn out to be low

A low result opens a conversation about options, and doing nothing yet is one of them. Sometimes the first step is addressing sleep, weight or a medication. Sometimes it is investigating the cause further. For some men, testosterone replacement therapy is discussed.

In our men's program, testosterone therapy is given as weekly testosterone cypionate injections, either in the clinic or shipped home, with labs and follow-ups every eight to twelve weeks so the dose can be adjusted based on blood work and how you feel. Fertility is an important part of that conversation. Testosterone therapy can suppress sperm production, so any man who may want children should say so at the first visit; our protocol includes gonadorelin to help preserve testicular function, and your provider will explain what that does and does not do.

Testosterone therapy is a prescription treatment with real risks and monitoring requirements. Your provider should explain those risks for you specifically, including what your follow-up labs are watching for.

Questions worth asking any clinic before starting therapy

Whether you come to us or go elsewhere, these questions help you judge whether a hormone program is built around your health or around a sale.

• Which labs do you run before prescribing, and which do you repeat?
• How often will I have labs and a provider visit once I start?
• What happens if my labs show a side effect?
• How does this affect fertility, and what can be done about it?
• Who do I contact between visits, and how quickly will they respond?
• Will you coordinate with my primary care doctor?

The mistakes that cost men the most

Buying testosterone or other hormones online or through a gym contact is the most dangerous. The dose, the contents and the effects on your blood are all unknown, and nobody is checking. The second is skipping the fertility conversation and finding out later. The third is chasing a number: feeling better is the goal, and a provider should be treating you, not a lab value in isolation.

The fourth is stopping monitoring once things feel good. Follow-up labs exist because changes can happen quietly. The fifth is the opposite of all the others: waiting years because the symptoms felt embarrassing to bring up. They are common, they are worth discussing, and the first step is only a conversation and a blood draw. If a partner or spouse is going through her own hormone changes, my guide on starting hormone therapy for perimenopause or menopause covers the women's side.

What happens when you reach out to us

You can book online or by phone, at our office next to Hilton Park Cities or through a virtual consultation available across Texas. A nurse practitioner takes a full history, including sleep, stress, medications and family plans, and orders comprehensive labs. When results are in, you review them together and talk through what they mean and what the options are, including when the answer is to look elsewhere.

If testosterone therapy is right for you, our men's TRT membership includes lab testing and medical supervision; our website lists it at $199 a month, self-pay, and we offer financing through CareCredit. If several things have changed at once, my broader guide on what a medical consult looks at when you feel unlike yourself explains how we approach the whole picture for men and women in Dallas.

Questions people ask me