25th July 2023

A 72-year-old man presents with headaches, unilateral hearing loss and pelvic pain.

A 72-year-old man presents with headaches, unilateral hearing loss and pelvic pain. ALP was noted to be raised on a blood test on the initial assessment. X-rays of his skull and pelvis are performed, which confirms a diagnosis of Paget’s disease.

What other marker is most likely to be elevated in the serum?

Select the SINGLE most appropriate option from the list below. Select ONE option only.