Advanced gut testing allows us to identify hidden inflammation, microbial imbalance, and intestinal permeability that drive chronic digestive and systemic symptoms.
Our Advanced Gut Testing Options
To accurately diagnose and repair gut dysfunction, we utilize the following specialized evaluations:
GI Effect and Gut Zoomer
Comprehensive Digestive Stool Analysis uncovers hidden gut imbalances that may be driving inflammation, nutrient deficiencies, and chronic systemic symptoms.
SIBO Breath Test
The SIBO breath test identifies hidden bacterial overgrowth in the small intestine that may be responsible for persistent gas, bloating, constipation, and diarrhea.
Wheat Zoomer or Leaky Gut Test
Leaky gut syndrome develops when the intestinal barrier becomes compromised, allowing inflammatory triggers to enter the bloodstream and affect multiple systems throughout the body.
Comprehensive Food Allergy and Sensitivity Testing (IgA and IgG)
Hidden food sensitivities can quietly drive inflammation, digestive distress, and autoimmune symptoms, even when standard allergy tests appear normal.

Why Choose Health & Vitality Center?
Founded in 2009, Health & Vitality Center is led by Dr. Shiva Lalezar, who integrates advanced gut diagnostics with structured functional medicine treatment plans. Rather than suppressing symptoms, we identify the microbial, inflammatory, and immune drivers contributing to digestive dysfunction and create personalized strategies to restore balance.
Contact Health & Vitality Center today to begin advanced gut repair in Los Angeles with a data-driven, root-cause approach.
FAQ Advanced Gut Repair
How do I prepare for gut testing?
Preparation varies by test. Stool analysis panels typically require no fasting, while the SIBO breath test involves a preparatory diet and a fasting period beforehand. Specific instructions are provided ahead of each test to ensure results are not influenced by recent food intake or supplement use.
Are the testing methods invasive or uncomfortable?
No. The tests used at Health & Vitality Center are non-invasive. Stool analysis is completed through a home collection sample sent to the lab, the SIBO breath test involves drinking a substrate solution and providing breath samples at timed intervals, and sensitivity panels are completed through standard blood draws. No scopes or procedures are required.
What is the difference between a food allergy and a food sensitivity?
A food allergy triggers an immediate immune response, typically involving IgE antibodies, and can produce acute reactions. A food sensitivity involves a delayed immune response, often mediated by IgA or IgG antibodies, and may cause symptoms hours or even days after exposure, making it difficult to identify without targeted testing. Because standard allergy panels only test for IgE reactions, hidden sensitivities frequently go undetected.
What is the difference between IBS and SIBO?
IBS is a diagnosis based on symptoms, without an identifiable structural or microbial cause. SIBO is a measurable condition in which bacteria migrate into the small intestine in excessive numbers, producing gas and disrupting digestion. Many patients diagnosed with IBS have underlying SIBO that has never been tested for, which is why breath testing is an important diagnostic step.
How long does the gut repair process typically take?
Gut repair is rarely quick. Depending on the degree of dysbiosis, intestinal permeability, and the presence of conditions like SIBO or fungal overgrowth, a structured repair protocol may span several months. Each phase builds on the previous one, and progress is assessed throughout rather than assumed.
Can long-term medication use contribute to gut dysfunction?
Yes. Antibiotics, proton pump inhibitors, NSAIDs, and certain other medications can alter the gut microbiome, impair the intestinal lining, or disrupt digestive enzyme function over time. A thorough patient history includes reviewing medication use as a potential contributing factor to gut imbalance.
How does gut health affect mood and mental health?
The gut and brain communicate through a bidirectional signaling network involving the vagus nerve, immune pathways, and microbial metabolites. The gut produces a significant portion of the body's serotonin. When the microbiome is disrupted or the gut lining is compromised, this communication breaks down, which may contribute to anxiety, depression, and mood instability independent of brain-based causes.
Can chronic stress damage the gut lining?
Yes. Prolonged stress activates the body's stress response, which can reduce blood flow to the gut, alter motility, compromise the mucosal barrier, and shift the composition of the microbiome. Over time, these changes create conditions favorable to increased intestinal permeability and dysbiosis, which is why stress management is often incorporated into gut repair protocols.
How often should gut health be retested once treatment begins?
Retesting frequency depends on your initial findings and how your symptoms respond. In most cases, follow-up testing is recommended after completing an initial repair protocol to confirm that imbalances have resolved and to guide any remaining interventions. Lab results, not symptom relief alone, determine when gut health has been adequately restored.
Is advanced gut testing appropriate for children or teenagers?
Gut dysfunction is not limited to adults. Children and adolescents experiencing chronic digestive complaints, food sensitivities, recurrent infections, skin conditions, or mood disturbances may also benefit from gut evaluation. Appropriateness is assessed individually during consultation.


