Which test is necessary for confirming a hypertension diagnosis?

To confirm a hypertension diagnosis, the essential tests typically include measuring blood pressure at multiple points and considering potential underlying causes. While weighing the implications of the other tests listed, the combination of U+E (urea and electrolytes), LFT (liver function tests), and FBC (full blood count) provides crucial information that can help identify secondary causes of hypertension, as well as assess renal function and overall health status.

For example, elevated urea levels may indicate kidney dysfunction, which can lead to hypertension, while abnormalities in the electrolytes could suggest issues related to adrenal function or fluid balance. Liver function tests might highlight systemic issues that could be affecting blood pressure as well.

Although tests like TSH or HbA1c evaluate thyroid function and blood glucose control, respectively, they do not directly confirm hypertension. Likewise, non-fasting lipids provide information about cardiovascular risk but do not contribute directly to diagnosing hypertension. Therefore, the comprehensive approach provided by the U+E, LFT, and FBC combination is integral to confirming hypertension and investigating its potential causes.