A few quick questions and we'll build you a personalised test - or point you to the right ready-made panel. There are no wrong answers.
50+Biomarkers available
20+Test profiles
10HealthCoach scores
V20.1
What brings you to Forth today?
This helps us find the right path for you - not everyone needs all the questions.
I want a general health overview
I'd like to understand where my health stands right now
I want to explore a specific area of health
Things like hormones, heart health, nutrients, thyroid...
I have a health goal I'm working towards
Energy, fitness, fertility, weight, longevity...
I have symptoms or something that doesn't feel right
I want to understand what might be going on
I want to monitor something I already know about
My hormones, a condition, my HRT or TRT, my progress
What is your biological sex?
We ask this to make sure we use the right reference ranges for your results - some biomarkers have different healthy ranges depending on biological sex. Your gender identity is a separate question.
Female
Including transgender men who have not yet started gender-affirming hormone therapy (testosterone)
Male
Including transgender women who have not yet started gender-affirming hormone therapy (oestrogen or HRT)
Intersex / I have a variation of sex characteristics
How do you identify?
We want Forth to feel right for you. This helps us use the right language and make sure our recommendations fit your life.
Woman
Man
Non-binary
I prefer to self-describe
Prefer not to say
How old are you?
Age helps us prioritise the right health areas - what matters most shifts at different life stages.
Under 35
35–39
40–54
55 and over
What is your ethnic background?
Some conditions - including type 2 diabetes, cardiovascular disease, and certain inherited anaemias - are more common in specific ethnic groups. Knowing your background helps us include the right markers and interpret your results accurately for you.
White British
White Irish
Any other White background
Mixed - White and Black Caribbean
Mixed - White and Black African
Mixed - White and Asian
Any other Mixed or Multiple ethnic background
Asian or Asian British - Indian
Asian or Asian British - Pakistani
Asian or Asian British - Bangladeshi
Asian or Asian British - Chinese
Any other Asian background
Black, African, Caribbean or Black British - African
Black, African, Caribbean or Black British - Caribbean
Any other Black, African or Caribbean background
Arab
Any other ethnic group
Prefer not to say
Which areas of health do you want to explore?
Select as many as you like - we'll build a personalised test covering everything relevant, and suggest a ready-made panel too.
Hormones and cycle health
Testosterone and male hormones
Menopause and perimenopause
Heart health and cholesterol
Liver and kidney health
Bone and muscle health
Mental health and mood
Metabolic health and blood sugar
Thyroid health
Nutrients and vitamin levels
Immune health
Longevity and healthy ageing
Fertility
What health goals are you working towards?
Select as many as apply - we'll build your test around all of them.
Improve my energy and beat fatigue
Understand my hormones
Support my fertility or start trying to conceive
Manage my weight
Look after my heart health
Improve my fitness or sports performance
Support my mental health and mood
Healthy ageing and longevity
Are you currently taking any of the following?
Some medications affect how we collect your sample and how we read your results. Getting this right matters - it only takes a second.
HRT - hormone replacement therapy
TRT - testosterone replacement therapy
Thyroid medication
e.g. levothyroxine
The contraceptive pill or other hormonal contraception
Diabetes medication
e.g. metformin
Statins (cholesterol medication)
None of the above
Which of these are you experiencing?
Select everything that applies - the more you tell us, the more relevant your recommendation. There are no wrong answers here.
I'm always tired or have no energy
Persistent exhaustion, struggling to get through the day even after rest
I think my hormones are out of balance
Something feels off but I'm not sure exactly what - mood, energy, cycle, weight, skin
Unexplained weight gain or difficulty losing weight
Despite no obvious change in diet or exercise
Hair loss or thinning
More than usual, or noticeably changing - including hormonal or postpartum hair loss
Hormonal acne or skin breakouts
Acne or skin changes linked to your cycle, stress or hormones
Irregular, absent or painful periods
Cycles changing, becoming shorter, longer, heavier or stopping altogether
Hot flushes or night sweats
Heat episodes, waking in the night, sudden temperature changes
Low libido or loss of sex drive
A noticeable change in sex drive that doesn't feel like you
Brain fog or difficulty concentrating
Struggling to think clearly, forgetting things, feeling mentally sluggish
Getting ill more often or slow to recover
Catching things frequently or taking longer to bounce back than you used to
Muscle weakness or joint pain
Unexplained aches, stiffness or a drop in physical strength
Bloating or digestive discomfort
Persistent bloating, stomach discomfort or changes in digestion
What are you monitoring?
We'll make sure you get the right test for ongoing tracking - and flag anything that's changed.
My HRT - hormone replacement therapy
Oestrogen, progesterone or combined therapy
My TRT - testosterone replacement therapy
Gel, injection, patch or implant
My thyroid condition or medication
Hypothyroidism, Hashimoto's or levothyroxine dose
My cholesterol or heart health
Including if you're on statins or have high cardiovascular risk
My blood sugar or diabetes
Type 1, Type 2, prediabetes or HbA1c tracking
My iron levels or anaemia
Iron deficiency, ferritin or haemoglobin monitoring
My hormones and cycle
Cycle mapping, hormone balance or perimenopause tracking
My PCOS
Annual androgen, metabolic and hormone monitoring
An autoimmune or inflammatory condition
Rheumatoid arthritis, lupus, IBD, or similar - often needs 3-monthly testing
My vitamin D or nutrient levels
Tracking supplements or deficiencies over time
My progress since a previous Forth test
Track how your results have changed
Something else
Where are you in your cycle or life stage?
Hormones change significantly across different life stages - this tells us which test is right for where you are right now.
I have regular periods
My cycle is broadly predictable
My periods are irregular or have changed
Shorter, longer, heavier, lighter, or less predictable
I think I may be going through perimenopause
My cycle is changing and I'm experiencing new symptoms
I am postmenopausal
I haven't had a period for 12 months or more
I am trying to conceive
I am currently pregnant
I am postpartum
I've had a baby in the last 12 months
I am on hormonal contraception
The pill, coil, implant, injection or patch
This question doesn't apply to me
I don't have a uterus, or none of the above describes my situation
Anything else we should know?
Completely optional - but the more context you give us, the more tailored your recommendation will be.
Family history of heart disease or high cholesterol
Family history of diabetes
Family history of cancer
Family history of osteoporosis
I have been diagnosed with a condition
I take supplements regularly
e.g. vitamin D, B12, iron, omega 3, magnesium
I follow a specific diet
e.g. vegan, plant-based, keto, low-carb
Nothing to add - show me my results
Your personalised recommendation
Your test is ready.
Based on what you've told us, here's where we'd suggest starting.
Sample collection recommendation
Sample collection note:
Collection method note: Your personalised test includes folate, which has high failure rates from finger-prick samples. We recommend collecting via Tasso (at-home wearable) or phlebotomy (clinic visit) to ensure an accurate result.
When to take your sample
Cortisol: Your personalised test includes a cortisol measurement. For an accurate result, this sample must be taken between 8–10am (within 1–2 hours of waking).
Testosterone: Testosterone follows a strong diurnal rhythm and is highest in the morning - please collect your sample between 8 and 10am (within 1–2 hours of waking) for an accurate result.
Thyroid medication: For the most accurate thyroid results, please test before taking your morning dose of levothyroxine.
About your results
Hormonal contraception noted: Because you're on hormonal contraception, some hormone results will look different to what you'd expect without it - hormonal contraception suppresses certain hormones as it's designed to. We'll flag this in your results.
Statins noted: Your cholesterol results will reflect your medicated levels. We'll flag this so you can see the full picture.
Diabetes medication noted: Your HbA1c result will reflect your medicated state - that's a good thing, showing how well your blood sugar is being managed.
PSA context for Black men: PSA levels in Black men can be naturally higher than in other groups - this doesn't mean something is wrong. Your result will be reviewed with this context in mind. We'd always recommend discussing PSA results with your GP.
Not sure which test is right for you?
Our doctors offer a 1:1 health consultation - they'll review your symptoms and help you decide exactly where to start. There's no pressure; it's just a conversation.
A note on your symptoms: Persistent or new fatigue at your age combined with a family history of cancer warrants a comprehensive workup. The personalised test above is broad by design and covers the markers most useful as a first-line screen. We strongly recommend speaking with your GP about your symptoms alongside testing, particularly if your fatigue is new, persistent or unexplained.
This quiz is an information tool only — it is not a clinical decision-making tool and should not replace professional medical advice. Our recommendations are a guide based on what you've told us, not a medical opinion. If you have specific health concerns, we always recommend speaking with your GP — or book a 1:1 with one of our doctors.
Manage Cookie Consent
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.