I always advise my patients to avoid caffeine and alcohol for at least 48 hours prior to the test, as these substances can affect vestibular function and potentially lead to misleading results. Additionally, it’s important to come with a clear understanding of your symptoms, including when they occur and their intensity. This background helps the healthcare provider tailor the test and interpret results accurately. If you’re curious about how the findings will affect your treatment plan, know that VNG testing often serves as a stepping stone towards effective management of your condition, guiding both diagnostic and therapeutic decisions.