Allergy test
Allergy test | |
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Purpose | Detect allergies |
Allergy testing can help confirm or rule out allergies and consequently reduce adverse reactions and limit unnecessary avoidance and medications.[1][2]
Correct allergy diagnosis, counseling and avoidance advice based on valid allergy test results is of utmost importance and can help reduce the incidence of symptoms, and the need for medications and improve quality of life.[2] A healthcare provider can use the test results to identify the specific allergic triggers that may be contributing to the symptoms. Using this information, along with a physical examination and case history, the doctor can diagnose the cause of the symptoms and tailor treatments that will help the patient feel better. A negative result can help the doctor rule out allergies in order to consider other possibilities. Ruling out allergies is as important as confirming them to limit unnecessary avoidance, worry and negative social impact.[3]
Types of tests
Blood test
For an
Skin allergy test
Skin allergy testing comprises a range of methods for medical diagnosis of allergies that attempts to provoke a small, controlled, allergic response.
Skin prick test
For a
Patch test
Patch testing helps identify which substances may be causing a delayed-type allergic reaction in a patient and may identify allergens not identified by blood testing or skin prick testing. It is intended to produce a local allergic reaction on a small area of the patient's back, where the diluted chemicals were planted. The chemicals included in the patch test kit are the offenders in approximately 85–90 percent of contact allergic eczema and include chemicals present in metals (e.g., nickel), rubber, leather, formaldehyde, lanolin, fragrance, toiletries, hair dyes, medicine, pharmaceutical items, food, drink, preservative, and other additives.
References
- ^ a b Boyce, J et al., "Guidelines for the Diagnosis and Management of Food Allergy in the United States: Report of NIAID-Sponsored Expert Panel", J Allergy Clin Immunol 2010; 126: S1–S58.
- ^ a b National Institute for Health and Care Excellence, "Diagnosis and assessment of food allergy in children and young people in primary care and community settings", 2011. Retrieved 26 December 2019.
- ^ Sampson, H et al., "Utility of food-specific IgE concentrations in predicting symptomatic food allergy", J Allergy Clin Immunol 2001; 107: 891–6.
- ^ "NIH Guidelines for the Diagnosis and Management of Food Allergy in the United States. Report of the NIAID-Sponsored Expert Panel", 2010, NIH Publication no. 11-7700.
- ^ Asthma and Allergy Foundation of America, "Skin Testing for Allergies", 25 June 2012. Retrieved January 2013.
External links
- Allergy blood testing information from the AACC