Serum Testosterone Level: Understanding Its Importance, Normal Ranges, and Health Implications

What Is Serum Testosterone Level?

Serum testosterone level is the amount of testosterone in your blood. Testosterone is a hormone made mainly in the testicles in men and in smaller amounts in the ovaries in women. It plays a key role in many body functions. Doctors often use a serum testosterone test to check these levels. This test helps find out if your hormone levels are normal or not.

Why Is Serum Testosterone Important?

Testosterone is important for both men and women. In men, it helps with muscle growth, bone strength, and sperm production. For women, it supports bone health and mood. Also, it affects energy, sex drive, and even mood. Because of this, keeping a healthy serum testosterone level is vital for overall health.

Normal Ranges for Serum Testosterone

Normal testosterone levels can vary by age and gender. However, doctors use certain ranges as a guide. These values are usually measured in nanograms per deciliter (ng/dL).

  • Adult men (19+ years): 300–1,000 ng/dL
  • Adult women (19+ years): 15–70 ng/dL
  • Children and teens have different normal ranges. Levels also change with age. For example, testosterone is highest in young adults and drops as people get older. If your serum testosterone test shows numbers outside these ranges, you may need further checks.

    Symptoms and Signs of Abnormal Serum Testosterone Levels

    Sometimes, people do not notice changes in their testosterone levels. Yet, there are signs that may point to a problem. Early detection is important for good testosterone health.

    Low Testosterone Symptoms

  • Low energy or tiredness
  • Reduced sex drive
  • Loss of muscle mass
  • Increased body fat
  • Mood changes, like sadness or anger
  • Weak bones
  • High Testosterone Symptoms

  • Acne or oily skin
  • Unusual hair growth (especially in women)
  • Deepening voice (in women)
  • Increased muscle mass
  • Anger or mood swings
  • If you notice these symptoms, it is wise to talk to your doctor.

    Causes of Low or High Serum Testosterone

    Many things can affect your serum testosterone level. Sometimes, the cause is simple, like aging. Other times, it may be due to health problems.

    Common Causes of Low Testosterone

  • Aging
  • Obesity
  • Chronic illnesses (like diabetes)
  • Injury to the testicles or ovaries
  • Certain medicines
  • Common Causes of High Testosterone

  • Hormone disorders
  • Use of steroids
  • Ovarian or testicular tumors
  • Polycystic ovary syndrome (PCOS) in women
  • Because causes can vary, a doctor can help find the reason for your abnormal levels.

    How Serum Testosterone Is Measured (Diagnosis)

    Doctors use a simple blood test called the serum testosterone test. Usually, the test is done in the morning when levels are highest. You may need to avoid eating or drinking before the test. The results help your doctor decide if your levels are normal, low, or high. Sometimes, more tests are needed to find the exact cause.

    Treatment Options for Abnormal Serum Testosterone Levels

    Treatment depends on whether your levels are too low or too high. Your doctor will suggest the best plan for you.

    For Low Testosterone

  • Testosterone replacement therapy (gels, patches, or injections)
  • Treating the underlying cause (like weight loss or changing medicines)
  • For High Testosterone

  • Treating hormone disorders
  • Stopping steroid use
  • Managing PCOS in women
  • Always follow your doctor’s advice for safe and effective treatment.

    Lifestyle Tips for Maintaining Healthy Testosterone Levels

    While medical treatment is important, healthy habits can also help. Here are some tips to support good testosterone health:

  • Eat a balanced diet rich in fruits, vegetables, and lean proteins
  • Exercise regularly, including strength training
  • Get enough sleep each night
  • Maintain a healthy weight
  • Avoid smoking and limit alcohol
  • Manage stress with relaxation techniques
  • These steps can help keep your serum testosterone level in a healthy range.

    Prevention and When to Consult a Doctor

    Although some changes in testosterone are natural, you can lower your risk of problems by maintaining a healthy lifestyle. If you notice symptoms like tiredness, mood changes, or changes in sex drive, it’s best to see a doctor. Early testing and treatment can help prevent further health issues. Remember, regular check-ups are key to staying healthy.

    Consult a healthcare professional at Elite Diagnostics for personalised advice and accurate testing of your serum testosterone levels.