Gut Microbiome Testing
Advanced Gut Microbiome Analysis & Microbiome Restoration
The gut microbiome refers to the trillions of microorganisms living within the gastrointestinal tract and their collective genetic material.
Emerging research continues to explore the important role the gut microbiome may play not only in digestive health, but also in broader aspects of health including:
immune regulation
metabolism
inflammation
nervous system function
the gut-brain axis
hormone metabolism
cardiometabolic health
Alterations in the gut microbiome have been associated with:
IBS and digestive symptoms
bloating, reflux & altered bowel habits
SIBO/IMO and dysbiosis
food intolerances
anxiety, stress & mood changes
fatigue and brain fog
metabolic health and insulin resistance
perimenopause and menopause
immune and inflammatory health
The gut microbiome may be influenced by a wide range of factors including diet, stress, sleep, certain medications, hormonal transitions, and broader lifestyle patterns.
As a result, microbiome testing may provide valuable insight not only for digestive symptoms, but also for broader aspects of systemic health and overall wellbeing.
What Is Gut Microbiome Testing?
Gut microbiome testing refers to stool analysis used to assess the composition and function of microorganisms within the gastrointestinal tract.
The preferred testing utilised in clinic uses shotgun metagenomic sequencing technology to analyse the gut microbiome in significant detail.
Unlike traditional culture-based stool testing, shotgun metagenomic sequencing analyses microbial genetic material directly from the sample, allowing for a broader and more detailed assessment of the gut ecosystem — including many organisms that cannot easily be cultured in a laboratory setting.
A Highly Individualised Approach To Microbiome Restoration
No two microbiomes are identical.
Microbiome testing can help guide a more personalised and targeted treatment approach, rather than relying on generalised “gut protocols.”
Recommendations may include:
microbiome-supportive nutrition
increasing dietary diversity and fibre tolerance
evidence-informed probiotics and prebiotics
herbal and nutritional medicines
polyphenol-rich foods
nervous system and stress support
support for digestive and gut barrier function
lifestyle factors influencing microbiome health
Avoidance of long term use of harsh ‘non-selective’ herbal antimicrobial medicince
Gut Microbiome Changes During Perimenopause & Menopause
Emerging research suggests hormonal changes during perimenopause and menopause may influence the gut microbiome, while the microbiome itself may also influence aspects of estrogen metabolism, inflammation, and metabolic health.
Many women notice changes during this stage including worsening bloating or digestive symptoms, changes in food tolerance, and altered bowel habits.
Microbiome support during midlife may form part of a broader strategy aimed at supporting digestive, metabolic, hormonal, and cardiometabolic wellbeing.
Advanced Microbiome Analysis & Restoration
Gut microbiome testing and interpretation is a rapidly evolving and highly specialised area of clinical practice.
Amy Castle has completed advanced microbiome-focussed clinical training with internationally recognised microbiome researcher and clinician Dr Jason Hawrelak, including:
Advanced Microbiome Manipulation (Certified Microbiome Analyst)
Naturopathic & Functional Approaches to Gastrointestinal Disorders (Certified Healthy Gut Practitioner)
Alongside advanced gut & microbiome-focussed training, Amy has extensive experience interpreting shotgun metagenomic gut microbiome testing across a diverse range of clinical presentations.
This additional training, combined with extensive clinical experience, supports the evidence-informed interpretation of advanced microbiome testing and the development of personalised nutrition, lifestyle, probiotic, prebiotic, and herbal medicine strategies aimed at supporting long-term microbiome health and resilience.
FREQUENTLY ASKED QUESTIONS
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The microbiome is a rapidly evolving area of scientific research. While not all microbiome associations are fully understood clinically, there is now substantial research exploring links between the gut microbiome and broader aspects of human health.
The testing utilised in clinic incorporates evidence-graded insights and clinically validated biomarkers supported by peer-reviewed scientific literature.
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Testing involves a simple stool collection completed at home. Depending on the level of testing required, one or more samples from the same stool may be needed. Detailed instructions are provided within your test kit to guide you through the collection process step-by-step.
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Results are typically available within approximately 4 weeks from the time your sample is received by the laboratory. Microba provides all required return postage materials and instructions within the testing kit.
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This is considered very much on an individual basis and personal preference. Follow-up testing is more commonly discussed and encouraged in cases of significant microbiome dysbiosis and/or when monitoring progress and response to treatment over time may be clinically indicated.
The minimum recommended timeframe before retesting is generally 3 months. However, in clinical practice, repeat testing is more commonly considered around 4–6 months, particularly for those needing a slower, more gradual approach to gut microbiome support due to gut sensitivities.
Want To Learn More About The Technology?
For additional information about the microbiome testing technology utilised in clinic and to view sample reports, you can learn more via the official Microba website: microba.com
Australia-Wide Online Gut Microbiome Support
Consultations are available online via telehealth Australia-wide.
If you are experiencing chronic gut health concerns, or are seeking a more personalised and evidence-informed approach to microbiome assessment and restoration, I look forward to working with you.
