The exact lab testing we recommend depend on your individual circumstances but might include: Blood tests for specific conditions like high cholesterol, hypothyroidism, vitamin markers, autoimmune disease, gluten and food sensitivity, and stealth infections. Advanced stool testing to screen for parasites, fungal overgrowth, bacterial infections, intestinal inflammation, dysbiosis, and a deficiency of beneficial gut bacteria. Breath testing for gastrointestinal bacterial imbalances, such as small intestinal bacterial overgrowth (SIBO). Urine organic acids testing to screen for small intestinal bacterial overgrowth, fungal overgrowth, problems metabolizing fat or carbohydrates, B-vitamin status, methylation issues, detoxification capacity, oxidative stress and neurotransmitter metabolism. Saliva or serum hormone testing for adrenal and sex hormone status.