Your gut lining is designed to act as a protective barrier, allowing nutrients through while keeping larger, unwanted molecules out. When this barrier weakens – a process often called “leaky gut” – toxins, microbes, and food particles can pass into the bloodstream, potentially triggering inflammation, immune reactions, and a wide range of health issues.

Research has linked increased intestinal permeability to conditions such as IBS, IBD (Crohn’s & Ulcerative Colitis), Coeliac disease, food sensitivities, eczema, autoimmune disorders, metabolic issues, fatigue, and even neurodevelopmental conditions like autism. Not everyone with these conditions has leaky gut – but if present, it can worsen symptoms or make healing harder.

The Lactulose:Mannitol (L:M) urine test is considered the gold standard for measuring intestinal permeability. Here’s why:

• Safe and simple — you drink a solution containing two sugars, then complete a 6-hour urine collection.
• Accurate — unlike zonulin testing (stool or blood), the L:M test directly measures gut barrier function and malabsorption.
• Actionable results — a high lactulose:mannitol ratio suggests increased intestinal permeability, while low mannitol recovery may point to malabsorption or villi atrophy.

This package includes your test plus a 1:1 naturopathic consult to interpret results and create a personalised gut-healing strategy. This may include:

• Nutrition and lifestyle changes to support gut barrier repair.
• Targeted gut-healing herbs and supplementations.
• Reintroduction guidance for food sensitivities.
• Further testing if required (gut microbiome testing, SIBO testing, etc.).

If you’re ready to stop guessing and start understanding what’s really happening in your gut, this package will give you clarity, answers, and a plan for long-term healing.