How to test for low testosterone: what men should know
Do you need a low testosterone test?
If you're constantly tired, losing muscle mass, struggling with belly fat, or experiencing low sex drive, you might be dealing with low testosterone (Low-T). These symptoms are common in men over 30 and testing your testosterone levels is the first step toward getting better.
When should you get tested for low testosterone?
You should consider a testosterone test if you’re experiencing any of the following:
Chronic fatigue or low energy
Reduced sex drive
Erectile dysfunction
Loss of muscle
Increased body fat
Mood changes (irritability, sadness, depression)
Difficulty concentrating (brain fog)
What happens during a testosterone test?
The most reliable way to check testosterone levels is with a simple blood test.
Your healthcare provider will review your symptoms and medical history and draw a blood sample, typically in the morning between 7:00 AM and 10:00 AM, when your testosterone levels are at their highest.
What’s Measured:
Total testosterone – the overall testosterone in your blood
Free testosterone – the active form your body can use
Before your test, your provider may ask you to:
Fast for 8 –12 hours
Avoid intense exercise the day before
Stop certain medications or supplements temporarily
What happens after the test?
A testosterone level below 300 ng/dL is generally considered low.
If your testosterone levels are low, your provider may order additional tests to find out why, including:
Luteinizing hormone (LH) – signals your body to make testosterone
Follicle-stimulating hormone (FSH) – helps make sperm and testosterone
Prolactin – high levels of this hormone can lower other hormones that make sperm.
Depending on your results and symptoms, your healthcare provider may recommend any of the following treatment options:
Lifestyle changes: diet, sleep, stress management, and exercise
Addressing health issues like obesity or sleep apnea
Testosterone replacement therapy (TRT) or natural stimulating therapies
Understanding how and when to test for low testosterone is key to managing your hormonal health. Symptoms like low energy, reduced sex drive, and brain fog can signal an underlying issue that’s often overlooked. A simple blood test, especially one that measures both total and free testosterone, can provide clarity and guide the next steps in treatment. By identifying Low-T early, men can take proactive steps to improve their overall health, vitality, and quality of life.
