Can you tell me if I'm infertile?

No - a vaginal microbiome test cannot diagnose infertility. What it can do is identify imbalances in your vaginal microbiome that may be associated with difficulty conceiving, implantation challenges, miscarriage risk, or recurrent infections. We see microbiome testing as one important piece of the fertility picture, alongside hormone testing and clinical fertility care.

What does it screen for?

Your overall vaginal microbiome composition - your balance of protective Lactobacillus versus disruptive microbes - plus qPCR screening for key organisms linked to imbalance and infection, including the silent infections that standard fertility work-ups often skip.

Should I do this before IVF?

Many people choose to explore their vaginal microbiome before IVF or embryo transfer, because research suggests a Lactobacillus-rich microbiome may be linked to better implantation and IVF outcomes. It's also one of the few fertility factors you may be able to influence before treatment. Some fertility clinics now include microbiome screening in their care pathways to help patients optimise conditions beforehand.

When can I expect my results?

Your results will be available in 2-3 days after posting your sample. Every result is reviewed by a clinician, and you'll receive a clear, personalised report. The Hormone Test & Fertility Focus Bundle also include a 30-minute consultation with a fertility nurse.

Two women standing together, one resting a hand on her bump

Your fertility, decoded.

Your hormones and your vaginal microbiome, tested together at home - needle-free and clinician-reviewed.

Take the 2-min quiz Explore the tests

UKAS-accredited labs

Clinician-reviewed results

Pain-free, at-home

Results in 3-5 days

Two tests.

One clear picture.

We connect your vaginal, menstrual and hormonal health into one picture - so you and your clinician can move from reactive treatment to proactive care.

DIAGNOSTIC TAMPON

Vaginal Microbiome + STI Screen

Get a clear picture of your vaginal ecosystem and how it may be affecting your fertility - from the comfort of home.

WHAT'S INCLUDED

Comprehensive vaginal microbiome analysis
qPCR screening for key bacteria linked to vaginal imbalance
Clinician-reviewed fertility insights
Personalised treatment recommendations
Optional nurse consultation

Buy Diagnostic Tampon

BEST TOGETHER · SAVE 15%

Fertility Focus Bundle

For anyone starting to think about conceiving, preparing for IVF, or simply wanting answers.

WHAT'S INCLUDED

Free 10-minute onboarding call
12-marker comprehensive panel
Includes AMH (ovarian reserve)
Vaginal Microbiome + STI Screen
Personalised, clinician-reviewed
A 30-minute 1:1 video consultation with an expert fertility nurse

Shop Fertility Focus Bundle

HORMONE TEST

At-Home Hormone Panel

Understand your full hormone profile - ovarian reserve, cycle health, ovulation markers and more - with a pain-free, needle-free at-home blood test.

WHAT'S INCLUDED

Includes AMH (ovarian reserve indicator)
FSH, LH, Estradiol, Prolactin, Testosterone, SHBG, FAI
Thyroid (TSH, FT4), Vitamin D and Ferritin
Personalised, clinician-reviewed recommendations
A 30-minute 1:1 video consultation with an expert fertility nurse

Buy Hormone Test

HORMONES & FERTILITY

How do your hormones affect fertility?

Your hormones regulate every stage of your reproductive cycle - from follicle development and ovulation to uterine lining quality and the signals that prepare your body for implantation. Imbalances can be subtle and go undetected without targeted testing, even when fertility is being affected.

Your hormones rise and fall across your cycle

MenstrualDays 1-5Hormones at their lowest
FollicularDays 6-13Estrogen rises
Ovulation~Day 14LH surge
LutealDays 15-28Progesterone peaks

Day 1Day 28

: Reflects your ovarian reserve, the pool of eggs you have left. It declines naturally with age. It reflects egg quantity, not quality.
: These hormones regulate follicle development, trigger ovulation, and drive your menstrual cycle.
: Supports follicle maturation and uterine lining; essential for implantation conditions. Beyond the reproductive cycle, it helps protect bone density, skin elasticity, heart health and mood.
: Best known for milk production, but raised levels can also disrupt your cycle, lower estrogen, affect bone health, and occasionally flag a pituitary gland issue worth investigating.
: Androgens are not just "male" hormones - they support libido, energy, muscle and bone. SHBG controls how much is active in your body, and imbalances are linked to PMOS and metabolic health.
: Your metabolic thermostat, governing energy, weight, temperature, mood and heart rate. Because it sets the body's pace, it also influences cycle regularity and the reproductive axis.

An imbalanced hormonal profile does not mean infertility. Many hormonal concerns are manageable with the right information and support. The Hormone Test gives you an early, detailed baseline to work from.

MICROBIOME & FERTILITY

How does your vaginal microbiome affect fertility?

Get a clear picture of your vaginal ecosystem - and rule out silent infections that standard fertility work-ups often skip - from the comfort of home.

Illustration of an unbalanced vaginal microbiome

Unbalanced microbiome

Silent infections that exist without symptoms and can affect pregnancy
Recurrent BV or thrush
Subpar conditions for conception and pregnancy
May adversely influence IVF outcomes
Associated with a higher risk of pre-term labour and miscarriage

Illustration of a balanced vaginal microbiome

Balanced microbiome

Supports healthy reproductive conditions
Improved vaginal environment for conception and pregnancy
May support IVF outcomes
Fewer recurrent infections

Dr Sami Almusawa, MRCOG — Dr Sami AlmusawaMRCOG, Chief Medical Officer, Plan Your Baby

Test your microbiome

WHO IT'S FOR

Daye screenings may be relevant if you...

Are planning for pregnancy and want a proactive baseline
Have been trying for a while and want to understand more before, or alongside, seeing a clinic
Have irregular cycles, or possible signs of PMOS or thyroid changes
Get recurrent BV, thrush or UTIs, or have unusual discharge
Have a history of STIs, or simply want to rule out silent infections
Are preparing for IVF or egg freezing and want hormonal and microbiome insight beforehand
Have experienced recurrent miscarriage or failed IVF and want to look at more factors
Simply want proactive reproductive health insights

Not sure where you fit?

Take the 2-minute reproductive health screening finder below - or start with the Fertility Focus Bundle for the complete picture.

Take the quiz

A woman in a cream turtleneck resting a hand at her neck

How does it work?

Both tests use the same simple, at-home process - only the sample collection differs.

Two women using a Daye at-home collection kit

Collect your sample at home

For the Hormone Test, if you're menstruating, take the sample on days 2-5 of your menstrual cycle. If your periods are MIA or irregular, take the test on any day. For the Diagnostic Tampon, take the test a few days after your period ends. Ship them individually using the pre-paid mailers you received.

A Daye results screen listing screening reports

Get your results online

3-5 business days after posting your samples to the lab, you will receive your detailed diagnostic results, alongside actionable next steps to ensure your reproductive health is maximised.

A video consultation with a Daye fertility nurse

Review with a nurse

One of our vetted, empathetic reproductive health nurses will guide you through your results in depth. Together, you can chart a clear path ahead, customised to where you are now and where you'd like to be in the future.

Not sure from where to start?

TRIMESTER ZERO

Welcome to Trimester Zero

Most fertility care starts when something goes wrong. Trimester Zero is different: it’s the window before you’re pregnant, when understanding your body gives you the most options, the most time to act, and the least pressure to make decisions in a hurry.

A hand holding a Daye diagnostic tampon applicator

Diagnostic Tampon gives you

Vaginal microbiome composition
Infection identification (incl. silent reproductive infections)
Personalised treatment support
ProViotics & Lactobacilli supplementation if needed
Optional nurse consultation

Buy Diagnostic Tampon

A hand holding the Daye needle-free hormone test device

Hormone Test gives you

A comprehensive hormonal baseline
Ovarian reserve (AMH)
Early detection of cycle irregularities
Lifestyle and nutrition recommendations
Specialist referral pathways

Buy Hormone Test

REAL STORIES

Trusted by patients

“These results gave me and my clinic the clarity we had been missing.”

Sarah

Trying to conceive

“This was my first time testing my microbiome, and it flagged something to follow up on. Quick and easy - I have recommended it to my IVF support group.”

Priya

Preparing for IVF

“It took a huge weight off my shoulders - I finally knew what my issue was, when my GP and sexual-health clinic had never tested for it.”

Megan

Recurrent infections

“The microbiome screen is a game changer. No second-guessing or self-medicating before knowing what is really going on. Uncomplicated and comfortable.”

Aisha

Proactive screening

IVF PREP

Preparing for IVF?

Both your hormonal profile and your vaginal microbiome can influence IVF outcomes. Understanding both before treatment starts may help you and your clinic optimise conditions for embryo transfer.

Diagnostic Tampon before IVF

Often silent, these infections (Chlamydia, Gonorrhoea, Mgen, BV) are linked to tubal damage, implantation failure and early miscarriage.
A Lactobacillus-dominant microbiome supports implantation - and it is one of the few fertility factors you can influence before transfer.
Clear next steps to correct dysbiosis or treat infection before you conceive or transfer.

Hormone Test before IVF

A comprehensive hormonal baseline, including the common treatable causes of reduced fertility (thyroid, prolactin, PMOS markers).
Ovarian reserve (AMH) - an indicator of how your ovaries may respond in IVF and a useful input for fertility planning.
Lifestyle and nutrition recommendations - evidence-based steps to support hormonal health.

Marija SkujinaCEO & Founder of Plan Your Baby

LEARN

Your fertility, explained

Not sure which

test you need?

Go through our personalised fertility screening finder to discover which insights may be most relevant for your journey.

Take the 2-minute quiz

TRUST & SAFETY

Powered by scientific rigour you can trust

Every Daye test uses CE- and UKCA-marked collection devices, registered with the MHRA and processed in UKAS-accredited, CQC-registered laboratories. As a company, Daye is certified to ISO 27001 (data security), ISO 13485 (medical device quality) and GMP (manufacturing) - so your sample, your data and your results are all held to medical-grade standards.

UKAS-accredited, CQC-registered laboratories
ISO 13485 & GMP-compliant manufacturing
ISO 27001-certified data security
CE- & UKCA-marked, MHRA-registered devices

Learn more on our Science Page

Everything you might ask.

Still have questions? Read all of our FAQs.

: No - a vaginal microbiome test cannot diagnose infertility. What it can do is identify imbalances in your vaginal microbiome that may be associated with difficulty conceiving, implantation challenges, miscarriage risk, or recurrent infections. We see microbiome testing as one important piece of the fertility picture, alongside hormone testing and clinical fertility care.
: Your overall vaginal microbiome composition - your balance of protective Lactobacillus versus disruptive microbes - plus qPCR screening for key organisms linked to imbalance and infection, including the silent infections that standard fertility work-ups often skip.
: Many people choose to explore their vaginal microbiome before IVF or embryo transfer, because research suggests a Lactobacillus-rich microbiome may be linked to better implantation and IVF outcomes. It's also one of the few fertility factors you may be able to influence before treatment. Some fertility clinics now include microbiome screening in their care pathways to help patients optimise conditions beforehand.
: Your results will be available in 2-3 days after posting your sample. Every result is reviewed by a clinician, and you'll receive a clear, personalised report. The Hormone Test & Fertility Focus Bundle also include a 30-minute consultation with a fertility nurse.