Genetic testing has real value, but it is not absolute. A person can have a strong clinical picture of familial hypercholesterolemia, including very high cholesterol and a family history of early heart disease, and still test negative on a standard genetic panel, because not every gene change responsible for the condition has been identified or is included in current testing panels. In such cases, a negative genetic result does not rule out an inherited cause; the diagnosis may still be made on clinical grounds using cholesterol levels, family history, and physical findings. Additionally, genetic testing identifies risk based on known gene changes, but it does not measure the current severity of artery involvement, which still requires clinical and biochemical assessment. For this reason, genetic testing works best as one part of an overall evaluation rather than as a stand-alone yes-or-no answer, and results should always be interpreted by a clinician alongside the person’s cholesterol levels, family history, and cardiovascular risk profile.