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What Is Pure Testosterone and what does it do?

Written by Author - Authors Medical experts of the National HRT Clinic - January 31, 2017

100% Pure Testosterone

Pure testosterone is a 19 carbon steroid hormone that is produced mainly by the Leydig cells in the testes of men. It is produced by the ovaries in women. Both genders create pure testosterone from the adrenal glands too; in smaller amounts. Men make more pure testosterone than women do, but both genders create it naturally.

When testosterone starts to deplete in the body, people may turn to testosterone replacement therapy (TRT) to replace what is missing. When they do this, they want to make sure that they are working with a reputable TRT clinic. The reason is because they only want to replace the missing hormone with 100 percent pure and real testosterone.

Pure testosterone medication needs to be prescribed by a licensed doctor who makes sure to only prescribe the correct medication and dosage of the injectable solution. In addition, the doctor must provide medical supervision during the entire course of a patient’s therapy. This is the only way to participate in completely safe and legal testosterone replacement therapy.

What is pure testosterone when it is replicated in a laboratory for the purposes of therapy? Let us talk about one of the most widely prescribed testosterone medications; Testosterone Cypionate. This is its chemical makeup in the most pure form:

  • Chemical name isandrost-4-en-3-one, 17-(3-cyclopentyl-1-oxopropoxy)-, (17β)-
  • Molecular weight is412.61
  • Molecular formula isC27H40O3

In addition, when Testosterone Cypionate is shipped to a patient, it comes in a sterile vial. This is what will be in that vial:

One vial of Testosterone Cypionate 200 mg contains: The amount of the ingredient in the vial is:
Testosterone Cypionate 200 mg
Benzyl Benzoate 0.2 mL
Cottonseed Oil 560 mg
Benzyl Alcohol (This ingredient acts as a preservative) 9.45 mg

What Does Pure Testosterone Do?

What does pure testosterone do for men when it is injected intramuscularly into the body? Pure testosterone is what keeps the body strong, healthy and active. The hormone is responsible for so many things physically, mentally, emotionally and sexually. Without enough of it, a person will feel lethargic, weak, ill and unhappy. They will most likely lose all quality of life.

The actions of testosterone in males are plenty.

Here is a comprehensive list of what pure testosterone does for a man:

  • Helps improve energy, vigor and vitality
  • Increases strength
  • Lessens body, muscle and joint pain
  • Helps to increase sexual desire, sexual libido and improves the ability to perform sexually
  • Eliminates erectile dysfunction
  • It helps hair to grow and stops balding or thinning hair
  • Helps strengthen skin elasticity for less wrinkles and sagging skin
  • Increases red blood cell count and blood volume
  • Helps with a healthy heart
  • Lowers cholesterol and triglyceride levels
  • Helps to lower the risk of heart attack, stroke and diabetes
  • Strengthens bone mineral density and increases the retention of calcium in the bones
  • Helps to keep bones strong and resistant to fractures and breaks
  • Lowers the risk of developing osteoporosis
  • Increases muscle mass by increasing muscle protein synthesis
  • Helps increase metabolism and weight loss
  • Helps to strengthen the immune system for less sickness and faster healing
  • Helps with faster recovery after workouts or physical activity
  • Helps with emotional well being including lessening depression, anxiety, irritability, agitation, anger outbursts and negative reactions to stressful situations
  • Helps with mental acuity, better memory, stronger ability to concentrate and better focusing
  • Decreases mental fogginess

Now that it is clear what is pure testosterone, a prospective patient can understand why it is so important to only buy this medication from a well received TRT clinic. With the right medical personnel helping a patient through treatment with this very powerful medication and doctor supervision, great benefits can result.

Medically reviewed by   Reviewers National HRT Staff - Updated on July 9, 2019

Please note that the information provided in this article is for informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment.


  1. A rare case of pure testosterone-secreting adrenal adenoma in a postmenopausal elderly woman Wei-bin Zhou Nan Chen Published: 23 January 2019
  2. Delayed presentation of a virilising, pure testosterone-secreting adrenocortical carcinoma with coexistent composite myelolipoma and a venous thrombus extending to the heart Delayed presentation of a virilising, pure testosterone-secreting adrenocortical carcinoma with coexistent composite myelolipoma and a venous thrombus extending to the heart Rakesh M Sharma,Sanjay Sinha,Hari B Kishan,Michelle De Padua