AKT-4505

On reviewing the blood results of a 65-year-old patient, you note mild hypercalcaemia. The full blood count, renal function, serum electrolytes, liver function tests and thyroid function tests were all normal. A subsequent repeat serum calcium shows persistence in the mild hypercalcaemia along with a raised parathyroid hormone. The patient is otherwise asymptomatic.

Which of the following would be the next most appropriate management step?