Colorectal mucosal histamine release by mucosa oxygenation in comparison with other established clinical tests in patients with gastrointestinally mediated allergy

Table 5 Patients’ history in comparison with the outcome of oral provocation tests in patients with GMA

	Positive H	Negative H	Line sum
Positive BPCFC	4	9	13
Negative BPCFC	3	4	7
Column sum	7	13

H: patients’ history, BPCFC: (double- or single) blinded, placebo-controlled oral food challenge. Note: Only 13 of 19 patients (68%) felt confident to answer questions concerning suspected provocation antigens, while the remaining were uncertain or had no experience of adverse reactions to the particular antigen. For evaluation of the specificity of patients’ history, data from only 7 patients (37%) were available. Patients’ history: Sensitivity 30.8%, specificity 57.1%.