Comparison of Simple Blood Lancet(Vitrex®)With DuoTip as Skin Prick Test Devices Among Mite-sensitized Subjects

Comparison of Simple Blood Lancet(Vitrex®)With DuoTip as Devices for Skin Prick Test Among Mite-sensitized Subjects

The purpose of this study is to compare the results skin prick tests using simple blood lancet (Vitrex®) with DuoTips among mite-sensitized subjects.

We intend to compare results of skin prick tests by using simple blood lancet(Vitrex®) and DuoTips in terms of wheal size, variability, transfer of allergen and pain level, among mite-sensitive subjects.

Inclusion Criteria:

• Who have positive skin prick testing to Der p 10,000 AU/ml (wheal size 3 mm at least)
• Age 12-60 yrs
• Written informed consent was obtained from all subjects and their parents

Exclusion Criteria:

• Who have positive skin prick testing to Der p 10,000 AU/ml above 15 mm.
• Who have dermographism
• Who have severe disease eg. severe respiratory disease or severe cardiovascular disease
• Who have severe eczema
• Who receive antihistamine, topical steroid within 7 days or ketotifen within 14 days or systemic steroid within 1 month
• Pregnant women