Blood Test For RED-S (MyFORM®)

Blood Test For

MyFORM® is a unique and ground-breaking female hormone mapping blood test that can help with the prevention and recovery from Relative Energy Deficiency in Sport (RED-S). The test measures your 4 key female female hormones across your entire menstrual cycle helping identify any hormone imbalance. This test is not suitable for women on hormonal contraception or HRT.


Finger Prick Kit

Medical badge

sports doctor review


Validated & analysed by NHS Lab


Results in 3 working days

£129 per test

Flexible subscription

Edge RED-S home blood test kit for female athletes

What gets tested?

4 Biomarkers

  • Oestradiol (Oestrogen)
  • Progesterone
  • Luteinising Hormone (LH)
  • Follicle Stimulating Hormone (FSH)

What are biomarkers?

Biomarkers are specific compounds we can detect in your blood sample that reflect different things about your health. Your test will tell you your levels for each of the above biomarkers, and whether they are in a normal range.

Gold Package

What's included

The test includes everything you need to collect your blood sample and return it to our lab:

  • Two blood sample collection kits, which will be delivered within 2-3 working days
  • A Tracked 24 envelope to return your blood sample for free
  • Accredited lab analysis
  • Results within 3-5 working days, once your second blood sample arrives at the lab
  • A review by a sports doctor
  • A secure app to review your results and doctor's comments
Glucose Gold

Blood sample collection options

Finger prick kit (FREE)

All our kits require a finger prick blood sample which is quick and easy to do at home. But if you don't like the idea of squeezing blood out of your finger, here are some other options:

You can choose your blood sample collection method in the checkout. Learn more about sample collection.

Info Gold

When to take the test

This test includes two blood sample kits to be used on day 14 and again on day 21 of the same menstrual cycle. If your menstrual cycle is less than 22 days or more than 40 days, then we recommend our Female Hormone Imbalance test available on our sister site Forth.

This MYFORM is not suitable for women taking hormonal contraception or HRT.

Edge RED-S home blood test kit for female athletes

What is RED-S?

RED-S stands for Relative Energy Deficiency in Sport. It is a syndrome that occurs when athletes have a chronic energy deficit, meaning they are not consuming enough calories to support their energy needs for training and daily living. This can lead to a number of health problems, including:

Low energy availability (LEA): LEA is the difference between an athlete's energy intake and expenditure. When LEA is too low, it can lead to a variety of hormonal and physiological changes.

Menstrual dysfunction: RED-S can disrupt a woman's menstrual cycle, causing it to become irregular or even stop altogether. This is because the body prioritises energy production for exercise over reproductive functions when LEA is low.

Bone health problems: RED-S can lead to decreased bone density, which increases the risk of osteoporosis and fractures. This is because the body needs adequate calcium and vitamin D to build strong bones, and RED-S can interfere with the absorption of these nutrients.

Muscle loss: RED-S can also lead to muscle loss, which can impair athletic performance and increase the risk of injuries.

What causes RED-S?

There are many factors that can contribute to RED-S, including:

Training volume and intensity: Athletes who train for long hours and at high intensities are at greater risk of developing RED-S.

Dietary restrictions: Athletes who restrict their caloric intake, especially to lose weight, are at risk of developing RED-S.

Underlying psychological issues: Athletes with underlying psychological issues, such as eating disorders or anxiety disorders, may be more likely to develop RED-S.

What are the symptoms of RED-S?

The symptoms of RED-S can vary from person to person. Some common symptoms include:

Fatigue: Fatigue is a common symptom of RED-S, and it can make it difficult to train and compete at a high level.

Irregular menstrual cycle: RED-S can disrupt a woman's menstrual cycle, causing it to become irregular or even stop altogether (amenorrhea).

Bone pain: Bone pain is another common symptom of RED-S, and it can indicate that bone density is decreasing.

Muscle loss: RED-S can also lead to muscle loss, which can make it difficult to maintain strength and power.

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We're changing people's lives

Thousands of athletes are already tracking with EDGE - and seeing big improvements


Cortisol & Prolactin

74% of our athletes saw their stress reduce



64% of our athletes saw their energy levels increase



75% of our athletes saw a reduction in inflammation



74% of our athletes saw an improvement in hydration

Used by professional Athletes

MyFORM® allows me to track the fluctuations of my hormones and provides explanations for why my periods haven’t become regular straight away. The most frustrating part of this whole process of RED-S has been that I feel physically fine, I don’t have an injury or an illness to show for my near 12 months off training, yet the results from MyFORM® confirm why I still need to continue resting for now.
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Issy Morris

BUCS Biathlon Champion 2020

Issy Morris Running during her triathlon

Used by professional Athletes

As an endurance athlete I know how easy it is to tip the balance from training and pushing your limits by ‘over-reaching’, to over training and having the potential to be injured. This is where MyFORM® has really been able to help. Tracking my hormones over my entire menstrual cycle has enabled me see the impact my training is having and avoid putting stress on my body resulting in a loss of periods.
Read More

Becky Hair

Cycling National Hill Climb National Championships

Becky Hair Cycling uphill

Used by professional Athletes

I use the Female Runner and MyFORM® tests to track hormone fluctuations and all my key biomarkers. The Edge tests together with the amazing team have been a game changer in getting to the bottom of hormone imbalances I was having due to being in an energy deficit. Luckily we got to the bottom of the problem quickly which helped avoid me getting RED-S and I now do regular testing to make sure I am keeping on top of everything as I want to get the best out of myself.
Read More

Carla Molinaro

LEJOG World Record Holder

Carla Molinaro Jogging

How to train in tune with your menstrual cycle

Training in tune with your menstrual cycle can help you optimise your performance and reduce your risk of developing RED-S. Here are some tips for training during different phases of your cycle:

Follicular phase: The follicular phase is the first half of your cycle, from the first day of your period to ovulation. During this phase, your energy levels and hormones are typically higher. This is a good time to focus on hard training, such as strength training or high-intensity interval training.

Ovulation phase: Ovulation is the time when you are most fertile. During this phase, your hormones are changing, which can affect your energy levels and mood. It is a good idea to listen to your body and adjust your training accordingly. If you are feeling tired or irritable, you may want to take a break or cross-train

Luteal phase: The luteal phase is the second half of your cycle, from ovulation to the start of your next period. During this phase, your energy levels and hormones are typically lower. This is a good time to focus on recovery and cross-training.

Identifying the right time to increase training load

The right time to increase your training load depends on a number of factors, including:

Your menstrual cycle: Listen to your body and adjust your training accordingly during different phases of your cycle.

Your current fitness level: If you are new to exercise or have been injured, it is important to start slowly and gradually increase your training load over time.

Your overall health: If you have any underlying health conditions, it is important to talk to your doctor before increasing your training load.

Increase your training volume gradually. Start by increasing your training volume bit by bit. Whether that’s only adding 2.5kg, or adding 1-2 more reps. Take it slow. And remember, rest days are just as important as workouts. Without rest, your body can’t repair itself.

The process is easy


We send you a simple finger prick test kit for you to do at home.

Take your samples

You take two samples: one on day 14 of your cycle, and one on day 21. (Don’t worry, we’ll tell you when this is!).


You post the samples back to us to get analyzed at an NHS lab, free of charge.

Get your results

3-5 working days after we've received your second sample you'll get your personalised hormone report.

Frequently asked Questions

Do I have to take the test during the same menstrual cycle?

Yes. Both blood samples must be taken on day 14 and day 21 of the same menstrual cycle.

What days do I need to take the test?

You will need to take a finger prick blood sample on day 14 and day 21 of the same menstrual cycle.

What should I do if my day 14 or 21 falls on a Fri through Sun?

If your day 14 or 21 falls on a Friday, we recommend you collect your sample the day before. If your day 14 or 21 falls over the weekend, collect your sample on the following Monday and remember to post in a priority post box in time for that day’s collection.

Should I change the test days if I have a longer or shorter cycle?

No, our algorithm will adjust your curves to the length of your personal cycle, so it is important that you collect your samples as close to day 14 and 21 as possible, even if you have a longer or shorter than average cycle.

When will I get my results?

MyFORM® test is a double test kit which measures your fertility hormones at two points within the same cycle – day 14 and day 21. Once our lab has completed the analysis of both samples, you’ll receive your personalised report via your secure dashboard.

Why is MyFORM® revolutionary for women?

By combining scientific blood analysis taken on day 14 and 21 of your cycle and information about your unique cycle length, MyFORM® uses AI to mathematically map how each of the 4 key hormones that change during perimenopause fluctuate across your entire cycle not just on a single day.

What will the report tell me?

Your report will indicate if your symptoms are likely to be due to RED-S. You’ll get a detailed, personalised report with next step actions from an endocrinology expert. The report will tell you: If your symptoms are likely due to RED-S Graphs indicating how each hormone fluctuates across your unique cycle Your FORM – ovarian response – score indicating how well your ovaries are responding to your control hormones Personalised ranges for each of the 4 hormones tested on day 14 and day 21 Confirmation if ovulation has occurred Clear next steps and actionable advice

How does the subscription work?

When you purchase this product the subscription frequency will be every 6 months but you can change this frequency during checkout to suit your needs. Your next test will then be sent out automatically and your payment card will be billed. You can manage your subscription through your own personal dashboard where you view your results. You can change the frequency or cancel the subscription at any time.

How do I cancel my subscription?

Cancelling your subscription is quick and easy. Simply log in to your Health Dashboard and click the cancel button.

How soon will the test arrive?

If you order your test before midday on a Monday to Friday then your kit will be dispatched the same day. All our kits are sent out via Royal Mail first class post, so it should be with you within 1-2 working days.

When will I get my results?

We aim to deliver your results within 2 working days of your blood sample arriving at our lab.

How do I view my results?

When you buy your test, we will ask you to create an account with us during checkout. This will give you access to your own, secure health dashboard where you can view your results.

How secure is my data?

We have strict processes in place to ensure the protection of your data. Following GDPR the company also operates under tight legal rules about the sharing of data which ensures that data is only shared if it is crucial to the delivery of our service. For example, our doctors see customer results at the time of review, however, after review, access to results is withdrawn.

How do I find out my results are ready?

We keep you updated throughout the process by email and text message. We will let you know when your blood sample has arrived at our lab.  Once the blood sample has been analysed one of our doctors will review your results. Once your results are ready, we will email you and send you a text message to let you know your results are ready for you to view in your health dashboard.

Does a doctor review my results?

We have a team of doctors and nurses who look at all results and will comment on any results that are outside of the normal range for your age.

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