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Comment: The lessons learned taking my femtech idea to prototype

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By Muna Daud, founder of FlowSense, the world’s first period detection device designed to help women with visual impairments to independently manage their menstrual health.

As an innovation expert, I’ve created a portfolio of ideas over the years, but one has gone to prototype – FlowSense, the world’s first patented period detection device that empowers visually impaired women to independently manage their menstrual hygiene.

Created as a project during my Master’s studies at Imperial College London, I knew I couldn’t let FlowSense just be another university project – I knew the impact that it would have and decided to follow it as a venture.

These are my learnings from start to prototype throughout the development of FlowSense.

Know your ‘why’

Before you even begin sketching out your idea, take a moment to ask yourself, “Why am I doing this?” In the early stages, it’s easy to get overwhelmed by inspiration. Before diving into the details, it’s important to take a moment to break down what truly matters about your idea. Ask yourself what problem you are solving and who you are solving it for, but most importantly, why your setting out to find a solution in the first place.

The ‘why’ for FlowSense came out of an already pre-existing interest in women’s health – particularly menstrual health. I had previously designed DAILYA, underwear with embedded heating to target menstrual cramps, which I put on hold to focus on FlowSense.

FlowSense began from learning about the struggles many visually impaired women face when managing their menstrual health. I knew this unmet need had to be addressed, and asking myself, ‘why not?’ I embarked on a journey of developing a solution for menstrual hygiene for those with visual impairments.

Find your Focus

In a world full of problems to solve, it’s tempting to try to tackle everything at once. But one of the most valuable lessons I learned is to narrow your focus. Instead of solving ten problems halfway, focus on solving one problem well.

For FlowSense, this meant zeroing in on one specific issue: the challenge of distinguishing menstrual blood from other bodily discharges.

While there are many challenges visually impaired women face when managing their periods, solving this issue has the potential to make an immediate and tangible difference in their lives. This focus guided every step of my process, ensuring that my energy wasn’t scattered across too many directions.

Identify your idea

Once you’ve found your focus, the next step is turning the problem into an actionable idea. For me, this involved brainstorming solutions that could make menstrual blood detection simple, accessible, and non-invasive for visually impaired women.

From research, I landed upon using pH as a detecting method, turning to finding methods to make this identifiable outside of traditional pH testing strips.

FlowSense’s early design was based on the fact that menstrual blood has a different pH compared to other vaginal discharges. Using this insight, I wanted to create a modified sanitary pad that would be able to respond to the different pH levels of vaginal fluids, and allows the visually impaired woman to detect periods for themselves through senses other than sight.

Bringing it to life

Turning an idea into reality is where the true challenges lie. This phase requires bridging the gap between concept and execution through innovation, experimentation, and relentless problem-solving.

For FlowSense, this meant going beyond theoretical designs and creating something functional, sustainable, and accessible – a biodegradable polymer tactile pad.

Research for this started in December 2022, with one of the key breakthroughs came from using the biodegradable polymer chitosan.

Chitosan is derived from chitin, a natural substance found in the shells of crustaceans, and has remarkable properties that make it perfect for FlowSense.

Not only is it biocompatible and environmentally friendly, but it also reacts to changes in pH – as chitosan swell in acidic vaginal discharge fluid and shrinks in alkaline period blood – a critical aspect of menstrual blood detection.

Our early prototypes used chitosan in pH-sensitive strips integrated into sanitary pads. When exposed to menstrual blood, the polymer would react and change its structure, providing a tactile signal that users could detect. This innovation offered a discreet and reliable way for visually impaired women to identify menstrual onset without visual cues.

This stage underscored the importance of selecting the right materials and embracing the iterative nature of product development. Chitosan wasn’t just a functional material – it became the cornerstone of bringing FlowSense to life.

Get users onboard

No matter how brilliant your idea may seem, it’s the users who ultimately determine its success. Getting feedback from your target audience early and often is essential to creating something that truly meets their needs.

For FlowSense, I partnered with the Royal National Institute of Blind People to connect with visually impaired women who could test our prototypes. Their insights were invaluable. They told us what worked, what didn’t, and what could be improved.

One of the most important insights came from the tactile element of the pad. While the idea of using a tactile signal for menstrual blood detection seemed straightforward during development, users raised concerns about hygiene and ease of use.

Handling the pad to detect the change wasn’t intuitive for some and felt unhygienic, particularly in situations where access to soap and water was limited. This highlighted the importance of designing solutions that not only work but also respect the practical realities of users’ daily lives.

Engaging with users also deepened my understanding of the problem we were trying to solve. It wasn’t just about detecting menstrual blood – it was about providing a tool that seamlessly fit into their lives, respected their privacy, and boosted their confidence.

Hold onto your first inspiration

Every journey from idea to product comes with setbacks, but holding onto your original inspirations keeps you grounded. Often, even if the first iteration of the idea doesn’t work out, the failures of that first iteration and the original focus will help build an even better product further down the line.

For FlowSense, the original tactile pad design didn’t work as intended, but the idea of using pH is still the focus while I work on the new working prototype, which I shifted focus onto in May 2023.

It was the tactile element that users did not like, so we’ve now shifted to seeing how pH detection can be used for audio or vibration cues instead.

I wanted to create a product that goes with the flow of user’s routines and preferences rather than forcing an idea that worked on paper but was not practical.

By combining the original pH testing pad idea with technology, I’m now working on a device that not only expands on the technology out there for menstrual health, but also widens the support FlowSense can offer by having a cycle tracking app connected to the device.

Through prototyping, FlowSense has evolved into a holistic solution for menstrual health, combining hygiene, tracking, and vaginal health diagnostics—a true testament to how technology can empower women’s well-being.

Future applications, like expanding vaginal pH analysis to all women for broader diagnostics, highlight its potential to revolutionise care. None of this would have been possible without listening to the women we designed for, proving the power of creating a device for women, by women.

Muna Daud is an innovation expert and founder of FlowSense, the world’s first period detection device for women with visual impairments.

Pregnancy

More than half of women with gestational diabetes face harmful stigma, research reveals

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More than half of women with gestational diabetes report stigma from healthcare staff, family, friends and wider society, new research shows.

A survey of 1,800 UK women found widespread emotional distress at diagnosis of the condition, a form of high blood sugar that develops during pregnancy, with effects lasting beyond birth.

Gestational diabetes affects around one in 20 pregnancies in the UK, and the findings highlight the wider toll on women diagnosed with the condition.

The study was funded by Diabetes UK and led by researchers at King’s College London and University College Cork.

Dr Elizabeth Robertson, director of research and clinical at Diabetes UK, said: “Stigma can have a dangerous and devastating impact on pregnant women diagnosed with gestational diabetes, particularly at a time when emotions and anxieties may already be heightened.

“We know that stigma can lead to shame, isolation and poorer mental health, and may discourage people from attending healthcare appointments, potentially increasing the risk of serious complications.

“This research highlights the urgent need for better support systems, based on understanding and empathy to ensure no one feels blamed or judged during their pregnancy.”

More than two-thirds of women, 68 per cent, reported anxiety at diagnosis, while 58 per cent felt upset and 48 per cent experienced fear.

The psychological impact continued beyond birth, with 61 per cent saying the condition negatively affected their feelings about future pregnancies.

Nearly half of women, 49 per cent, felt judged for having gestational diabetes, while 47 per cent felt judged because of their body size.

More than 80 per cent felt other people did not understand gestational diabetes, and more than a third, 36 per cent, concealed their diagnosis from others.

Gestational diabetes stigma was also common in healthcare settings, with 48 per cent reporting that professionals made assumptions about their diet and exercise, and more than half, 52 per cent, feeling judged based on their blood glucose results.

Many women described a loss of control and a sense of disruption during pregnancy.

Nearly two-thirds, 64 per cent, felt they were denied a normal pregnancy, while 76 per cent reported a lack of control over their pregnancy.

More than a third, 36 per cent, felt abandoned by healthcare services after giving birth, and one in four, 25 per cent, continued to experience depression or anxiety postpartum.

Focus group participants described harmful stereotypes, including assumptions that they were ‘lazy’, had ‘poor eating habits’ or ‘lacked willpower’.

Comments from family and friends included remarks such as “should you be eating that?” and “you must have eaten too much, that’s why you have gestational diabetes.”

The researchers are calling for targeted interventions alongside structured emotional support for women during and after pregnancies affected by gestational diabetes, to improve both mental and physical health outcomes.

Professor Angus Forbes, lead researcher from King’s College London, said: “Stigma and emotional distress are far more common in women diagnosed with gestational diabetes than many realise.

“Everyday interactions, even with those who mean well, can deepen this harm, shaping women’s emotional wellbeing and the choices they feel able to make.

“It’s clear that meaningful action is needed to protect women’s mental and physical health.”

Risk factors for gestational diabetes include living with overweight or obesity, having a family history of type 2 diabetes, and being from a South Asian, Black or African Caribbean or Middle Eastern background.

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Pregnancy

NIPT or NT scan? Why the 2026 evidence supports doing Both

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Article produced in association with London Pregnancy Clinic

One of the most common questions in early pregnancy: NIPT or the nuchal translucency (NT) scan – do I really need both? The 2026 evidence gives a clear answer.

The two tests look at different things, and doing them together is how first-trimester screening works at its best.

This is not a debate between old and new technology. NIPT is a genuine advance in detecting chromosome abnormalities from a maternal blood sample.

The NT scan is the first detailed look at how the fetus is forming. What each sees, the other largely cannot.

What NIPT actually tells you

NIPT – non-invasive prenatal testing – analyses fragments of fetal DNA circulating in the mother’s blood. Taken from around 10 weeks, the test measures chromosome proportions to flag the common trisomies: trisomy 21 (Down syndrome), trisomy 18 (Edwards) and trisomy 13 (Patau).

Most panels include fetal sex and sex-chromosome aneuploidies. Extended NIPT adds selected microdeletion syndromes – most commonly 22q11.2 (DiGeorge syndrome) – and the newest whole-genome platforms can detect copy-number variants down to around 1 Mb across every chromosome.

What NIPT does not look at is anatomy. It tells you whether the chromosomes are numerically correct.

It cannot tell you how the heart, brain, spine, kidneys or abdominal wall are forming, because it analyses DNA, not structure.

The NHS offers NIPT as a second-line screening test, reserved for women who receive a higher-chance result from the combined test – precisely because NIPT is best understood as one part of a wider screening picture rather than the whole of it.

What the NT scan actually tells you

The NT scan is an ultrasound performed at 11 to 14 weeks that measures the nuchal translucency – a small fluid-filled space at the back of the fetal neck.

Protocols developed by the Fetal Medicine Foundation, the group that pioneered first-trimester screening under Professor Kypros Nicolaides at King’s College Hospital, combine the NT measurement with additional markers: nasal bone, ductus venosus flow, tricuspid regurgitation, and maternal serum biomarkers (PAPP-A and free β-hCG).

More importantly, the scan is the first structural assessment of the fetus.

Major anomalies already visible at 11-14 weeks include absence of the cranial vault, large body-wall defects such as omphalocele and gastroschisis, megacystis, severe cardiac defects with abnormal four-chamber views, and skeletal dysplasias.

An increased NT measurement itself – even with a completely normal chromosome result – is associated with a notable rate of structural heart defects and monogenic syndromes that NIPT cannot detect.

Why the combination outperforms either test alone

Taken together, NIPT and the NT scan give complementary coverage.

For the common trisomies, NIPT is more sensitive than the NT scan alone. Pooled data place detection of trisomy 21 above 99 per cent with a false-positive rate around 0.1 per cent.

Combined first-trimester screening without NIPT, using NT and serum markers alone, reaches approximately 90 per cent detection – and up to 95 per cent when nasal bone, ductus venosus and tricuspid flow are added – at a 3 to 5 per cent false-positive rate.

For that specific endpoint, NIPT is the more accurate test.

The NT scan picks up almost everything NIPT misses: structural anomalies, early markers of monogenic syndromes, confirmation of viability, accurate dating, twin chorionicity, and placental position.

An increased NT with a normal NIPT result shifts the clinical conversation toward syndromes like Noonan, Kabuki and the skeletal dysplasias – conditions with single-gene origins rather than chromosomal ones.

Working out which is which often requires genetic testing beyond NIPT. Carrier screening and expanded genetic panels – including those offered at Jeen Health – cover the single-gene territory that NIPT does not address.

When the combination matters most

Several patient groups have most to gain from doing both:

  • Women conceiving after IVF or with donor gametes, where maternal age and fertility treatment each subtly shift risk profiles
  • Women aged 35 and over, where baseline chromosomal risk is higher and soft markers are more likely
  • Anyone with a previous pregnancy affected by an anomaly or loss, where reassurance matters
  • Twin pregnancies, where NIPT performance depends on fetal fraction and structural assessment is more complex
  • Women who have had a raised or borderline result on earlier screening markers

Chromosomes and anatomy are two separate clinical questions. Each needs its own answer.

What happens if the tests disagree

Disagreements between NIPT and the NT scan are not failures of either test – they are the reason both are done.

  • NIPT low-risk, NT raised: consider monogenic syndromes, structural cardiac assessment, and early anomaly ultrasound follow-up
  • NIPT higher-chance, scan normal: confirmatory diagnostic testing (CVS or amniocentesis) before any major decision
  • NIPT no-call: repeat sampling, gestational age check and clinical review – a no-call itself is associated with an increased chromosomal risk
  • Both abnormal: a clear indication for specialist fetal medicine review and early diagnostic testing

Professional guidance from the RCOG supports this complementary approach, emphasising that NIPT is a screening rather than a diagnostic test, and that its results are most useful when interpreted alongside ultrasound findings.

Practical guidance for 2026

The most efficient way to run both tests is in a single appointment window, between 10 and 14 weeks, with the blood sample taken first and the scan performed on the same visit.

Results typically return within 5 to 10 working days for standard NIPT panels, and same-day for the scan itself.

This is the logic behind the SMART Test at London Pregnancy Clinic – extended NIPT paired with a full first-trimester ultrasound in a single appointment, delivering both chromosomal and structural information in one visit. For most patients, it removes the false choice of picking one over the other.

The wider picture

The question of NIPT versus NT scan has a settled clinical answer in 2026: the two tests examine different aspects of the pregnancy, and the most complete first-trimester assessment uses both.

For a pregnancy a woman wants to carry with the fullest possible picture, both tests belong in the first-trimester window. The question worth asking is which clinic offers them together, with the pre- and post-test care that makes the results usable.

If you are deciding on first-trimester screening, a consultation with a fetal medicine specialist is the most useful first step.

Disclaimer: This article is produced for informational purposes only and does not constitute medical advice, diagnosis or treatment. Clinical guidance referenced reflects published NHS, Fetal Medicine Foundation and RCOG standards as at April 2026. Individual circumstances vary; readers are advised to consult a qualified healthcare professional before acting on any information in this article. This piece was produced in association with London Pregnancy Clinic, which provided background clinical information for editorial purposes. Hyperlinks to external sources are included for reference only and do not represent an endorsement of any product, service or organisation.

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Diagnosis

New meta-analysis further supports low re-excisions and high placement accuracy with the Magseed marker

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An independent meta-analysis from January 2026, pooling 2,117 patients and 2,176 Magseed marker placements, has reported low re-excision rates (8.2%) and low positive margins (7.6%) when the marker is used to localise non-palpable breast lesions prior to breast‑conserving surgery (BCS).

Al Darwashi et al. (2026) pooled 16 studies to evaluate safety and efficacy outcomes when the Magseed marker was used for preoperative localisation of non-palpable lesions prior to BCS.

The authors reported high placement accuracy, reliable intraoperative retrieval and low rates of positive margins, re-excisions and complications.

In a cohort cited by the review, Moreno‑Palacios et al. (2024) also observed that Magseed marker facilitates less extensive resections compared to guidewires, promising improved cosmetic outcomes while maintaining oncological efficacy.

The key findings

Low re-operation burden: Positive margins occurred in just 7.6% of cases, and only 8.2% required re-excision across the included series.

High placement accuracy: The success rate for Magseed marker placement showed 99.3% positioned within 10 mm of the lesion.

Of note, 96.6% of Magseed markers were placed within an even stricter 5 mm radius.

Reliable retrieval: The pooled intraoperative retrieval success was 99.6% for the Magseed® marker.

“This meta-analysis demonstrated Magseed as a safe and effective preoperative localisation technique for BCS in the management of selected non-palpable breast lesions.” Al Darwashi et al. (2026)

Ready to find out more about the Magseed marker and the Sentimag system?

→ Speak to a Magseed marker expert

→ Read the full paper here

Magseed® is a trademark of Hologic, Inc. or its subsidiaries in the United States or other countries. Intended for medical professionals and use in the U.S., UK and the EU only.

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