1st April 2022

An 11-year old boy presents to an emergency department with a swollen joint after PE class

An 11-year old boy presents to an emergency department with a swollen joint after PE class. On examination, there is also a haematoma visible in his leg muscles. Which test should be ordered to confirm the diagnosis of haemophilia B?

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