What’s a Fox Test and Why Is it Important?

Jan 28, 2022

What’s a Fox Test and Why Is it Important? 

Current technology and procedures related to hair transplants are quite advanced and many men and women take advantage of them every year with great results. However, not every person is a good candidate for follicular unit excision (FUE) and re-transplantation. The Fox test is one of the methods that is used to identify any hair transplant contraindications or potential problems that may make other options the best choice for you. It is primarily used for patients with curly hair, especially those with natural African American textures. This is due to the different shape of the hair follicles in people with textured hair. The Fox test lets the experts know if the transplanted hair will survive. 

What Is the Fox Test? 


When you first make an appointment to discuss the possibility of getting your hair transplanted an expert at our Bogota or Medellin location, expect to answer a lot of questions about your general health, concerns, and expectations. Even though this type of extraction and transplantation is not incredibly invasive, it is still important to check overall health and for any potential hair transplant contraindications. Under safe and sterile conditions, multiple hair follicles are removed from your head. If you are African American or have similarly curled hair, expect this to be a regular part of the process. Some Caucasian, Asian, or other ethnic group patients will also need to complete the Fox test. The total number removed may be from a few dozen up to 100 grafts. They first test to see if it is easy enough to remove the follicle without damaging scalp to an undue degree. Technicians then perform a biopsy to investigate the follicle carefully and make sure it is intact, strong enough for transplant, and overall suitable for the FUE procedure.

Why the Fox Test Matters? 

The Fox test make sure that your hair follicles are appropriate for extraction. If the hair follicles from the full part of your head cannot be removed easily and safely, it may be impossible to harvest enough to fill in the sparse locations effectively. Some things the surgeon looks for include full release of the entire follicle anchor system, the top of the follicle being at the same level of the scalp skin, and an overall easy extraction process. The follicular unit excision and transplant process depends on having the best grafts available. This increases the chance that they will thrive in their new location on your head. If you fail the Fox test and the surgeon is not able to harvest enough viable follicles, there still may be other options for you to get the lush and healthy head of hair you want. 


Other Hair Transplant Contraindications 

Although the modern hair transplant process has come a long way and is the right choice for many people, there are still those who are unable to take advantage of FUE transplantation. Before you book a flight to our Colombia hair restoration institutes in Bogotá or Medellin, it is important to understand if you have any hair transplant contraindications. They may include:

  • Various types of alopecia
  • Uncontrolled blood pressure issues
  • Bleeding or healing disorders
  • Excessive scalp scar tissue or other damage
  • Unreasonable expectations


The Fox test is one important step on the way to a fuller head of hair, improved appearance, and increased confidence. Hair Evolution by Robotics centers in Colombia take every step seriously to maximize the chance at a positive outcome.  You deserve a strong, healthy, and full head of hair, and we can help you achieve it. Contact us today!

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We can help!

If you’re experiencing hair loss and looking for a hair restoration solution that’s right for you—congratulations! You’ve come to the right place. HERO Hair Institute is the best hair restoration clinic in Colombia, providing proven permanent hair transplant techniques and non-surgical hair loss solutions.


With over 20 years of experience, HERO Hair Institute offers you the best quality procedures in a safe, relaxed and comfortable environment. Thousands of men and women have come to HERO Hair Institute for the answers to their hair loss and hair restoration questions.

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