25th May 2025

A 34-year-old female presents to the emergency department with wheezing and difficulty breathing.

A 34-year-old female presents to the emergency department with wheezing and difficulty breathing. She developed difficulty breathing after starting her meal. Her friends noticed her facial swelling and phoned for an ambulance. Her mother reports a similar issue when she eats peanuts and avoids them. On arrival at the hospital, she began to develop stridor and required intubation to protect her airway. Her blood pressure was 80/60mmHg on arrival. Her arms and legs had non-blanching wheals on the surface.

Which of the following tests can be performed to confirm her underlying diagnosis?

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