Efficacy of Local Lyophilized Food Extracts for Skin Prick Tests and Atopy Patch Test at Different Storage Times (0, 3 and 6 Months)
试验速览
- 阶段
- 不适用
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- Mean wheal diameter of skin prick test
研究概览
简要总结
Local lyophylized food extracts are available useful in skin prick test and atopy patch test to confirm food allergy. However, the investigators want to know the duration that the investigators can keep the extracts for the usage in this purpose.
详细描述
Food allergy incidence increases world wide. The diagnosis mostly depends on history. Skin prick test and atopic patch test are useful in finding the causative foods in some cases. The local food extracts have been shown to be at least as effective as commercial ones. From previous study the investigators keep the extract at 2-8 degree Celsius for 1-3 months for the usage. The investigators want to evaluate the duration that the extracts are still useful in diagnosis food allergy
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 3 Years 至 18 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Positive skin prick test to one of the food (milk, egg, soy, wheat, seafood)
排除标准
- •Chronic diseases such as heart disease, liver, renal and severe sepsis
- •Severe allergic symptoms such as anaphylaxis
- •Extensive skin rashes
- •Pregnancy
结局指标
主要结局
Mean wheal diameter of skin prick test
时间窗: 2 years
The skin prick tests are performed with local prepared food allergen at keeping time of 0, 3 and 6 months after the preparation.
次要结局
- Result of atopy patch test(2 years)
研究者
Nualanong Visitsunthorn
Professor
Mahidol University