Skin prick tests (SPT) for suspected allergens
A qualified health professional performed this test after ensuring that
facilities for resuscitation were available if the need arose. Oral
antihistamines and topical skin corticosteroids were stopped for the
required duration prior to testing. Skin prick testing with the
commercial allergens (Immunotek, Spain) or prick-to-prick testing were
carried out according to the guidelines set by the European Academy of
Allergy and Clinical Immunology by Muraro et al., 2014 [16]. A
positive and a negative control were included in all instances. The size
of the wheal was recorded at 15 minutes and a test was considered
positive if the wheal size is >3mm of the negative control.