What impact will the explosion in lateral flow technology and adoption have on women’s health? Abingdon Health’s CTO Nina Garrett provides her insights into what the future may hold.

The rise of lateral flow technology has significantly reshaped the landscape of healthcare, particularly for women.

From its origins in pregnancy testing to its current widespread use, lateral flow tests (LFTs) have made health monitoring more accessible and convenient. Here, we explore the history of lateral flow tests, the current rapid self-tests available for women, the reasons behind their adoption, and the potential future applications in women’s health.

The origins of lateral flow technology and pregnancy testing

Lateral flow technology dates back to the 1960s when researchers first began exploring immunoassay techniques for rapid testing. The first commercial lateral flow test, however, came to prominence in the late 1970s and early 1980s with the introduction of the home pregnancy test.

The first lateral flow test: home pregnancy testing

In ancient Egypt, an intriguing method to determine pregnancy involved women urinating on barley and wheat seeds. If the seeds sprouted, it was believed the woman was pregnant.

Surprisingly, modern science supports this ancient practice, as the hCG hormone in a pregnant woman’s urine can indeed promote seed growth. This historical test showcases the ingenuity of early diagnostic methods and the enduring quest for reliable pregnancy tests.

Fast forward to the early 1960s, scientists developed sophisticated techniques to detect hCG in urine. The significant breakthrough came in 1978 when Warner-Chilcott introduced the first over-the-counter home pregnancy test, the “e.p.t” (early pregnancy test).

This innovation transformed women’s health by offering a private, quick and reliable way to confirm pregnancy without needing a doctor’s visit, marking a new era in personal health diagnostics.

While this was a significant breakthrough, the pregnancy testing market remained relatively untouched until Abingdon Health’s recent release of the world’s first saliva pregnancy test which can now be found under the Boots brand to encourage adoption. HcG remains the flagship at-home women’s test but it has paved the way for what we now see on shelves.

Current rapid self-tests available for women

Today, lateral flow technology has expanded far beyond pregnancy tests empowering women to pro-actively manage their own health and wellbeing. Rapid self-tests are available that cater to women’s health needs include:

Ovulation tests: These tests detect the surge in luteinising hormone (LH) that occurs before ovulation, helping women identify their fertile window for conception.

Urinary tract infection (UTI) tests: These tests detect nitrites and leukocytes in urine, indicating the presence of a UTI.

Sexually transmitted infection (STI) tests: Some STI tests can be performed at home, testing for infections like chlamydia and gonorrhoea using urine samples or vaginal swabs.

Vaginal pH tests: These tests help diagnose bacterial vaginosis or yeast infections by detecting abnormal pH levels in vaginal secretions.

Menopause tests: These tests measure follicle-stimulating hormone (FSH) levels in urine, which can indicate the onset of menopause.

Vitamin D deficiency tests: One of the most common deficiencies worldwide, these tests allow the monitoring of deficient and sufficient levels. Vitamin D is essential for healthy bones and teeth, the immune system, brain health and for regulating inflammation.

Ferritin (iron) deficiency tests: Iron is a crucial mineral that plays several vital roles within the body including, oxygen transport, muscle function, enzyme activity and immune function. A lack of iron can result in iron deficiency anaemia.

Why women choose to use rapid self-tests at home

There are some distinct advantages in using rapid tests, however, there still are challenges to consider. We take a look at some of these below.

Advantages

• Convenience: Rapid self-tests empower women to conduct health checks at their own convenience, eliminating the need for scheduling and attending doctor’s appointments.
• Privacy: These tests offer a discreet way to monitor health conditions, which is crucial for sensitive issues like pregnancy, sexually transmitted infections (STIs), or menopause.
• Quick results: Delivering results within minutes to hours, these tests enable timely decision-making and prompt treatment.
• Cost-effective: Self-tests are generally more affordable than visiting healthcare providers, as they cut out consultation fees and reduce overall healthcare costs.

Disadvantages

• Accuracy concerns: Despite high accuracy rates, rapid tests can produce false positives or negatives, leading to unnecessary anxiety or false reassurance. This is where a trusted developer and/or supplier of LFTs is critical.
• Misinterpretation: Users may misinterpret results if instructions are not followed carefully, potentially leading to incorrect health decisions.
• Limited scope: Designed to detect specific conditions, self-tests do not offer a comprehensive health assessment and might miss other underlying issues.
• Need for follow-up: Positive results typically necessitate follow-up with a healthcare provider for confirmation and treatment, which can still be inconvenient.

Potential future applications of lateral flow tests in women’s health

The potential for expanding the use of lateral flow technology in women’s health is immense, and as a contract development manufacturing organisation  (CDMO), we are at the forefront of developing some novel products within women’s health and wellbeing. Here are several areas where future rapid self-tests could have a significant impact:

Hormonal imbalances

Hormonal imbalances can lead to a range of health issues, including irregular menstrual cycles, polycystic ovary syndrome (PCOS) and menopause-related symptoms.

Future self-tests could monitor hormone levels such as oestrogen, progesterone and testosterone, enabling women to manage their reproductive health more effectively.

Breast cancer

Early detection of breast cancer is crucial for successful treatment. Researchers are exploring the possibility of developing rapid self-tests that detect biomarkers associated with breast cancer in blood or saliva samples, allowing for regular, non-invasive screening at home.

Endometriosis

Endometriosis is a painful condition where tissue similar to the lining of the uterus grows outside it. Currently, diagnosing endometriosis requires invasive procedures.

Rapid self-tests that detect biomarkers in blood or urine would be a groundbreaking development for early diagnosis and management.

Fertility and menstrual health

In addition to existing ovulation tests, comprehensive fertility tests could assess multiple hormones and health markers to provide a detailed fertility profile. Similarly, tests that track menstrual health and predict issues such as dysmenorrhea (painful periods) or amenorrhea (absence of periods) would be invaluable.

Mental health

Mental health conditions, such as postpartum depression, are often underdiagnosed and undertreated. Innovative approaches to detect stress hormones or other biomarkers related to mental health could provide early warnings and facilitate timely intervention.

Nutritional deficiencies

While there are some rapid tests for detecting deficiencies in vitamins and minerals on the market, such as our iron self-test and vitamin D self-test as set out above, others like B12, could help women manage their dietary intake and address potential issues more proactively.

The explosion in lateral flow technology and its adoption holds immense promise for women’s health. The convenience, privacy and quick results provided by rapid self-tests are transforming how women monitor and manage their health.

While there are limitations to current self-tests, ongoing advancements in this field are going to expand their scope and accuracy, making them even more integral to women’s healthcare.

As research progresses, we can anticipate a future where rapid self-tests become commonplace for diagnosing and monitoring a wide range of conditions. This shift towards at-home testing will empower women to take more control of their health, leading to earlier detection, better management of chronic conditions and overall improved health outcomes.

Abingdon Health’s team has over 20 years’ experience in the lateral flow market and is a knowledge leader in the development, scale-up, transfer, manufacturing, regulatory approval and distribution of lateral flow products across a range of sectors. If you would like to understand more about these services, and discuss any specific requirements, don’t hesitate to contact Abingdon’s experts today.