TSH and Free T4 provide a reliable assessment of thyroid function and can identify treatable causes of fatigue, metabolic change, heart-rhythm disturbance and reduced wellbeing.

A targeted sex hormone profile can clarify specific reproductive, sexual or endocrine concerns, but results are most meaningful when interpreted within the correct clinical context.

PSA can contribute to earlier prostate cancer detection, but it should be used through informed, shared decision-making rather than as an automatic test for every man.