Dr. Karan Rajan, a surgeon based in the UK, emphasizes that normal blood test results should not be taken as definitive proof of good health. In a recent Instagram video, he highlighted that persistent symptoms such as fatigue, pain, and discomfort warrant further investigation, even when lab results fall within the normal range. Blood tests serve as temporary snapshots of health, which can overlook significant trends over time. Dr. Rajan pointed out that many serious conditions, including endometriosis and chronic pain syndromes, may not be detectable through standard blood tests. He encourages patients to trust their instincts and advocate for their health by discussing ongoing symptoms with their doctors, asking about potential conditions that could cause their symptoms, and considering additional tests or specialist referrals. Keeping a detailed symptom diary can also aid in this process, providing doctors with a clearer picture of the patient's health journey.