The overuse of diagnostic testing in primary care, particularly for nutrients such as folic acid, vitamin B12, and zinc, is a prevalent issue driven by a 'better safe than sorry' mindset and an emphasis on preventive medicine. This article reviews the evidence against routine broad-spectrum testing in the absence of clear clinical indications, highlighting studies that demonstrate the unnecessary nature of such tests in patients without specific risk factors. The Royal College of Pathologists and the Choosing Wisely initiative recommend against indiscriminate testing, as it may lead to a cascade of further unnecessary interventions, increased healthcare costs, and heightened patient anxiety. This paper proposes targeted initiatives to rationalize testing practices, including the implementation of clinical decision support tools, enhanced education on high-value care, regular audit and feedback mechanisms, and improved continuity of care by linking test ordering with follow-up responsibilities. By adopting a more evidence-based approach to diagnostic testing, we aim to minimize unnecessary interventions, reduce healthcare expenditures, and ultimately enhance the quality of care provided to patients.