Description of blood Analysis:

Testosterone is the principal sex hormone and anabolic steroid in humans. In men, it is primarily produced by the Leydig cells in the testes, while in women, it is produced in smaller quantities by the ovaries and adrenal glands. It is responsible for the development of male secondary sexual characteristics, but it also plays a vital role in both sexes for maintaining bone density, muscle mass, libido, and overall energy levels. In the blood, testosterone exists in two forms: bound (to proteins like SHBG) and free (biologically active).

What Does the Test Represent?

• Goal: To measure the total concentration of testosterone to assess reproductive and endocrine health.
• Main Application: Evaluating erectile dysfunction or low libido in men; investigating infertility, irregular periods, or PCOS in women; and monitoring patients on hormone replacement therapy (TRT).
• Method: Chemiluminescent immunoassay (CLIA) or Liquid Chromatography-Mass Spectrometry (LC-MS/MS).

Collection Recommendations (General)

• Timing: Testosterone levels follow a strong diurnal rhythm and are highest in the morning. Samples must be collected between 7:00 AM and 10:00 AM.
• Hygiene: Standard venipuncture procedure.
• Material: Venous blood (serum).
• Specific Rules: For women, it is often tested on Day 2–5 of the menstrual cycle. For men, a single low result often requires a repeat test on a different day to confirm a deficiency.

What Can Affect the Results?

• Factors Altering Levels: Acute illness (like the flu), intense overtraining, lack of sleep, and high alcohol consumption can temporarily lower levels. Obesity often correlates with lower total testosterone due to changes in binding proteins.
• Medications: Steroids, opioids, anti-fungals (like ketoconazole), and hormone-based contraceptives will significantly alter results. Biotin supplements can interfere with the lab’s detection technology.

When to Take the Test?

• Recommendations: Men should take it if experiencing chronic fatigue, loss of muscle mass, or sexual dysfunction. Women should take it if experiencing “male-pattern” hair growth (hirsutism), severe acne, or cessation of periods.
• Preparation: Fasting is usually recommended (8–12 hours). Avoid heavy exercise for 24 hours before the blood draw.

How to Interpret the Results? 

The interpretation of Testosterone levels is strictly a clinical analytical task for a physician.

•  In Men: Low levels (hypogonadism) may require further testing of LH and FSH to see if the cause is the testes or the pituitary gland.
• In Women: High levels are often associated with PCOS or, in rarer cases, adrenal or ovarian tumors. Only a specialist can “fine-tune” the diagnosis by calculating Free Testosterone if the Total Testosterone result is borderline.

Possible Further Investigations

• SHBG (Sex Hormone-Binding Globulin): To determine how much testosterone is actually available for the body to use.
• Free Testosterone: Often calculated or measured to get a more accurate picture of biological activity.
• LH and FSH: To locate the source of the hormonal imbalance (brain vs. gonads).
• Prolactin: Often tested alongside testosterone in cases of low libido.

When Does the Next Step Make Sense? 

If testosterone levels are outside the normal range, the next step involves identifying the underlying cause—whether it’s lifestyle-related, a primary organ failure, or a pituitary issue. Proper testosterone balance is essential for physical strength, mental clarity, and reproductive health.

👉 If necessary, you can discuss the analysis results with a specialist such as an endocrinologist (Doctors – TAMC), urologist (Doctors – TAMC).