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Testosterone Free

Also known as Free T-Index
15681600 1% Off
You need to provide
Blood
This test is for
Male, Female
Test Preparation
  1. No special preparation is required.

Understanding Testosterone Free


What is Testosterone Free?

The Testosterone Free test measures the amount of free (unbound to any other substance) testosterone, a male sex hormone, in the blood. This test is used to diagnose conditions such as decreased sex drive, infertility, erectile dysfunction in men, and irregular menstrual periods in women. It can also be utilized to track hormone levels in individuals receiving testosterone replacement therapy.

Testosterone is produced primarily by the testes in males and ovaries in females. It plays a vital role in developing secondary sexual characteristics, such as facial hair and deepening of the voice. It contributes to muscle development and bone density, essential for physical strength and overall well-being. It influences mood and energy levels, and an adequate amount is necessary for a healthy libido and optimal reproductive function. While it is chiefly a male sex hormone, testosterone is also produced in women in small amounts and affects the overall growth and development of muscles and reproductive tissues. Some of it is converted to estrogen, the primary female sex hormone.

Deranged testosterone levels can cause changes in health and physical appearance. The Testosterone Free test helps assess male infertility and identify hormonal imbalances, particularly in men experiencing symptoms such as low libido, fatigue, mood disturbances, and muscle weakness. This test is also valuable for monitoring the effectiveness of hormone replacement therapy in individuals with low testosterone levels. In women, the Testosterone Free test detects conditions such as menstrual irregularities and hormonal issues like increased facial hair.

Usually, no special preparation is required for the Testosterone Free test. You may eat and drink as per your daily routine. However, it should be noted that testosterone levels are highest during the early morning and lowest in the evening, and it increases with exercise and decreases with age.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Talk to your doctor about your specific test results. The results will help the doctor make informed decisions regarding treatment options, ultimately enhancing the quality of life and well-being.

What is Testosterone Free used for?

The Testosterone Free test is done:

  • In cases of male infertility, to provide insights into potential contributing factors and guide treatment.
  • In men who experience symptoms of hormonal imbalance, such as low libido, fatigue, mood disturbances, and muscle weakness.
  • In females with male traits such as excessive body hair (hirsutism) or irregular or absent periods.
  • To monitor treatment response in individuals with abnormal testosterone levels or those undergoing hormone replacement therapy.
  • In individuals taking medicines that may affect their testosterone levels.

What does Testosterone Free measure?

The Testosterone Free test measures the level of unattached or free testosterone in the blood. It is called free testosterone or free T because it is not attached to other molecules, especially proteins. The body actively uses free testosterone as signaling molecules that regulate metabolism and other cellular functions.

Interpreting Testosterone Free results


Interpretations

In males: 8.69 - 54.69 pg/mL

In females ( > 12 years)

Follicular phase: 0.45 - 3.17 pg/mL

Luteal phase: 0.46 - 2.48 pg/mL

Oral contraceptive: 0.55 - 2.01 pg/mL

Postmenopausal: 0.29 - 1.73 pg/mL

The reference range may vary from lab to lab*

Answers to Patient Concerns & Frequently Asked Questions (FAQs) about Testosterone Free


Frequently Asked Questions about Testosterone Free

Q. When can the Testosterone Free test be done?

The Testosterone Free test is typically done when there is a suspicion of hormonal imbalance or symptoms like fatigue, low libido, etc. It helps assess the levels of unbound (free) biologically active testosterone in the blood.

Q. Is there any risk associated with the Testosterone Free test?

No, the Testosterone Free test is generally safe with minimal risks. However, you may feel slight discomfort during blood sample collection but chances of serious complications are extremely rare.

Q. How often should I get the Testosterone Free test done?

The frequency of the Testosterone Free test depends on individual health and your doctor's recommendations. If you are experiencing symptoms of low testosterone or have a specific health condition, consult your doctor for an appropriate testing schedule.

Q. How is the Testosterone Free test different from the total testosterone test?

The Total testosterone test measures both bound and unbound (free) forms of testosterone, while the Testosterone Free test specifically measures the amount of unbound ( free) testosterone that is available for use by the body.

Q. In what conditions low testosterone levels can be observed?

Low testosterone levels may be observed in conditions such as hypogonadism ( a disorder affecting the testes in men and ovaries in women to function properly), long-term illnesses, testosterone deficiency, obesity, etc. If you suspect low levels of testosterone, consult your doctor for proper evaluation.

Q. In what conditions high testosterone levels can be observed?

High levels of testosterone levels can be observed in conditions such as Polycystic ovarian syndrome (PCOS), genetic disorders affecting the adrenal glands, certain tumors affecting the testicles or adrenal glands, illicit use of steroids, etc.

Q. Will taking supplements help to raise testosterone levels?

While some supplements claim to boost testosterone levels, it's important to approach them with caution. The body regulates hormone levels, and altering them without medical advice may lead to unintended consequences. Before considering supplements, consult your doctor to ensure they are suitable and safe for your individual health condition.

Q. What additional tests can be advised along with the Testosterone Free test?

The additional tests that can be advised along with the Testosterone Free test include the 17-hydroxyprogesterone, androstenedione, DHEA, estrogen, FSH or LH, and prolactin tests.
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Testosterone Free test price for other cities


Price inBangaloreRs. 1568
Price inMumbaiRs. 1568
Price inNew DelhiRs. 1568
Price inKolkataRs. 1568
Price inPuneRs. 1568
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References

  1. Rivas AM, Mulkey Z, Lado-Abeal J, Yarbrough S. Diagnosing and managing low serum testosterone. Proc (Bayl Univ Med Cent). 2014 Oct;27(4):321-4. [Accessed 03 Aug. 2023]. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4255853/ External Link
  2. Krakowsky Y, Grober ED. Testosterone Deficiency - Establishing A Biochemical Diagnosis. EJIFCC. 2015 Mar 10;26(2):105-13. [Accessed 03 Aug. 2023]. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4975356/ External Link
  3. Shea JL, Wong PY, Chen Y. Free testosterone: clinical utility and important analytical aspects of measurement. Adv Clin Chem. 2014;63:59-84. [Accessed 03 Aug. 2023]. Available from: https://pubmed.ncbi.nlm.nih.gov/24783351/ External Link
  4. Ramasamy R, Golan R, Wilken N, Scovell JM, Lipshultz LI. Association of Free Testosterone With Hypogonadal Symptoms in Men With Near-normal Total Testosterone Levels. Urology. 2015 Aug;86(2):287-90. [Accessed 03 Aug. 2023]. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4549166/ External Link
  5. Facondo P, Di Lodovico E, Pezzaioli LC, Cappelli C, Ferlin A, Delbarba A. Usefulness of routine assessment of free testosterone for the diagnosis of functional male hypogonadism. Aging Male. 2022 Dec;25(1):65-71. [Accessed 03 Aug. 2023]. Available from: https://pubmed.ncbi.nlm.nih.gov/35243960/ External Link
  6. Yang Q, Li Z, Li W, Lu L, Wu H, Zhuang Y, Wu K, Sui X. Association of total testosterone, free testosterone, bioavailable testosterone, sex hormone-binding globulin, and hypertension. Medicine (Baltimore). 2019 May;98(20):e15628. [Accessed 03 Aug. 2023]. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6531235/ External Link
  7. University of Rochester Medical Center. Free Testosterone [Internet].Rochester, NY: University of Rochester Medical Center; [Accessed 03 Aug. 2023]. Available from: https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=167&contentid=testosterone_totalExternal Link
  8. Institute of Medicine (US) Committee on Assessing the Need for Clinical Trials of Testosterone Replacement Therapy; Liverman CT, Blazer DG, editors. Testosterone and Aging: Clinical Research Directions. Washington (DC): National Academies Press (US); 2004. 2, Testosterone and Health Outcomes. Available from: https://www.ncbi.nlm.nih.gov/books/NBK216175/ External Link

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