21st February 2025

A 43-year-old woman presents with a 3-week history of cough and chest discomfort.

A 43-year-old woman presents with a 3-week history of cough and chest discomfort. A CT chest is carried out which demonstrates an anterior mediastinal mass. 

Which blood test would be most useful in the investigation of the mass?

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