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Postal service updates: October - December

Testosterone and Oestradiol Blood Test

Testosterone and Oestradiol Blood Test


A simple finger-prick blood test for men or women who want to check their balance of male and female hormones.
Blood sample 2 biomarkers included Results estimated in 2 working days from sample receipt at lab
Testosterone and Oestradiol Blood Test
Testosterone and Oestradiol Blood Test
Testosterone and Oestradiol Blood Test
Testosterone and Oestradiol Blood Test
Testosterone and Oestradiol Blood Test

Is it for you?

Are you a man who thinks that he may have too much of the female hormone oestradiol compared with testosterone? Are you experiencing problems such as diminished sex drive, low muscle mass and gynaecomastia (man boobs)? Or are you a woman who thinks that she may have higher testosterone levels than is normal because of polycystic ovaries? If you want to check that your testosterone and oestradiol levels are normal for your gender, then this is the right test for you.

What's included?

Biomarker profile

  • Hormones

Hormones (2 Biomarkers)

Special instructions

Prepare for your Testosterone and Oestradiol Blood Test by following these instructions. Please take your sample before 10am. Take this test two to five days after the start of your period, ideally on day three. It can be taken any time if you do not have periods. Hormonal contraception can affect the results of this test. Taking a break from this and waiting for your periods to restart before your blood test will give more accurate results. Avoid taking your sample from a finger used to apply hormone gels/pessaries/patches in the past 4 weeks. Use gloves to apply these. Do not take biotin supplements for two days before this test, discuss this with your doctor if it is prescribed.

From the expert

Testosterone is a hormone that causes male characteristics. In men, testosterone levels can impact libido, affect bone mass, body composition (such as levels of body fat and muscle mass) strength and the production of red blood cells and sperm. There are factors which can reduce a man's levels of testosterone, such as heavy alcohol consumption, liver disease and the use of AAS (anabolic androgenic steroids). Women taking oestrogen therapy may see increased testosterone levels.

Oestradiol is a steroid hormone which constitutes 80% of oestrogen in women. It is secreted by the ovaries and is responsible for the development and maintenance of the reproductive, system including fat distribution, preparing the follicles in the ovary for the release of an egg and helping to maintain bone density.

Men naturally convert some testosterone to oestradiol and it plays an important role in bone mass and sexual function. However, sometimes men can produce too much oestradiol compared with testosterone and this can result in female characteristics, especially the formation of breast tissue (gynaecomastia, moobs or man-boobs). 

Women also produce small amounts of testosterone. Elevated testosterone in women can cause male characteristics such as excessive hair, and is commonly associated with polycystic ovary syndrome. 

If you're worried about your hormone balance, you can quickly get answers with our simple testosterone and oestradiol test you can do at home. Our doctors will interpret your results and let you know whether your testosterone and oestradiol levels are within the normal ranges. 

Dr Sam Rodgers MBBS, MRCGP
Chief Medical Officer

Why take this test?

  • You are a man with symptoms of low T (testosterone) and you want to check your balance of male and female hormones
  • You are a man who takes TRT and wants to check your hormones are in balance
  • You are a man who has man-boobs (gynaecomastia) which you think is hormone related
  • You are a woman who wants to investigate polycystic ovary syndrome

Laboratories you can trust

Trusted by the NHS and private clinics alike, you can be sure of the highest testing standards from our UKAS accredited partner laboratories.

Dr Sam Rodgers - Chief Medical Officer

Expert advice with your results

Get trusted advice and comments from one of our doctors based on your results.

Your personal health centre

Your personal health centre

Discover the easy way to track your health through our online portal, View your results with doctor's advice, monitor any changes over time and see the improvements you can make to your health with simple lifestyle changes.

Questions? Let us help
Questions? Let us help

Questions? Let us help

Our customer care team is on-hand to help you find the test that's right for you. Get in touch via phone, live chat or email.


Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.