AIMS: To diagnostic @entity56 it's necessary an adequate history, and in vivo or in vitro test, to determine specific IgE. The skin prick test are the best for this, because are more sensitive, economic and quick to do. However there are variability in results with the different instruments to do it (the Morrow-Brown (MB), needle, Prick lancet (L)t Multi-Test (MT), and the Doutip-Test). To consider this instruments how adequate diagnostic proceedings, we should evaluate some characteristics. Because it, our objective was to evaluate precision, sensitivity, specificity and @entity1 preference by each one. METHOD: Prospective study in 20 @entity1 with @entity565 or @entity2023 who comes to the @entity566 service of Hospital Infantil de M  xico Federico G  mez. We analyzed skin prick test with DT, MB, MT and L on the back surface with @entity112 in five times and glicerosaline in one. We measured wheel and flare diameters 15 minutes after applications. We consider positive results if medium diameter of wheel was 3 mm or flare 10 mm. Precision was measured by coefficient of variation of wheel with @entity112 with each instrument. @entity1 preference was considered in relation to low grade of discomfort with each one. Precision was compared by two- vias varianza analysis. No parametric Friedman test was used to compared @entity1 preference. RESULTS: We studied 20 @entity1 , 40% was females and 60% males. The ages were 10 to 16 years old Promedio wheal @entity112 diameter was to MB = 5.1 +/- 1.1, L = 6.1 +/- 0.8, DT = 6.7 +/- 0.9, MT = 6.3 +/- 1.5; promedio flare diameter with @entity112 was to MB: 15.9 +/- 4.2, L: 19.0 +/- 4.8, DT = 21.9 +/- 4.8, MT = 18 +/- 6.9. Sensibility of DT was 100%, L = 99%, MT = 97% and MB 95%. The specificity of MB was 90%, L = 70%, MT = 41.6% and DT 30%. DT coefficient of variation was 15.6%, L: 17.3%, MT = 24.4% and MB 24.6%. CONCLUSIONS: In our study more sensitive device was DT, more specific was MB and more precise was DT. @entity1 preferred the lancet, because they had less discomfort when used it.

[Comparison of 4 skin prick tests to detect immediate XXXX ].

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'patient', 'Patient'] @entity2023 :: ('MESH:D006255', 'Disease') :: ['allergic rhinitis'] @entity565 :: ('MESH:D001249', 'Disease') :: ['asthma'] @entity566 :: ('MESH:D006967', 'Disease') :: ['allergy'] @entity56 :: ('MESH:D004342', 'Disease') :: ['allergic diseases'] @entity112 :: ('MESH:D006632', 'Chemical') :: ['histamine']
@entity56 :: (MESH:D004342,Disease) :: ['hypersensitivity']
