Intradermal Test
Conditions
Brief summary
This study aims to compare skin reactivity results between morphine and histamine as a positive control agents in intradermal skin test.
Detailed description
Histamine hydrochloride and different concentrations of morphine sulfate will be intradermally injected and wheal diameter size will be comparatively measured between 15-30 minutes' time points after the test.
Interventions
None listed
Sponsors
Study design
Eligibility
Inclusion criteria
* age 18-60 years old
Exclusion criteria
* immunodeficiency state * cancer * severe skin diseases * severe medical illnesses * malnutrition * uncontrolled asthma * pregnancy * received oral or systemic corticosteroid within 1 month before this study * receiving immunosuppressive agents * taken antihistamine within 3 days before this study * taking beta-blocker * previous history of immunotherapy * have hypersensitivity reaction to morphine/opiates
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Wheal diameter from morphine skin test at different concentrations compared to standard histamine between 15-30 minutes after skin test | 30 minutes |
Secondary
| Measure | Time frame |
|---|---|
| Side effects | 24 hours |
Countries
Thailand