What do the numbers on my allergy test mean?
Values under 0.35 mean unlikely sensitization to the allergen. Values between 0.35-0.69 mean doubtful significance. Values between 0.70-3.49 mean there is a possibility. Values between 3.50-17.49 mean a greater possibility. Values between 17.50-49.99 mean very likely.
What does a positive histamine skin test mean?
If the skin test is positive, it implies that the patient has a type of antibody (IgE) on specialized cells in the skin that release histamine to cause symptoms of an allergic reaction. These cells are called mast cells and the IgE antibody bound to them is specific to the food being tested, like a puzzle piece.
What do the wheal and flare numbers mean?
The wheal is the raised area of skin. The flare is the red area of skin surrounding the wheal. For example, a result of 5/15 for alder tree doesn’t mean 5 out of 25. Both numbers are measurements, so it indicates that there was a 5 mm wheal and a 15 mm flare.
How do you read allergy skin test numbers?
A patch test may take several days or more to produce results. A positive skin test means that you may be allergic to a particular substance. Bigger wheals usually indicate a greater degree of sensitivity. A negative skin test means that you probably aren’t allergic to a particular allergen.
What is a level 3 allergy?
Class 3: High level of allergy (3.5 KUA/L – 17.4 KUA/L) indicative of high level sensitization. Class 4: Very high level of allergy (17.50 KUA/L – 49.99 KUA/L) indicative of very high level sensitization. Class 5: Very high level of allergy (50.00 KUA/L – 99.9 KUA/L) indicative of very high level sensitization.
What are histamine symptoms?
Histamine is associated with common allergic responses and symptoms….Symptoms of histamine intolerance
- headaches or migraines.
- nasal congestion or sinus issues.
- fatigue.
- hives.
- digestive issues.
- irregular menstrual cycle.
- nausea.
- vomiting.
What foods raise histamine levels?
Foods that promote the release of histamine and are known as histamine liberators, include:
- Tomatoes, avocado and Brussels sprouts.
- Pulses and legumes, including peanuts.
- Walnuts.
- Bananas, strawberries, pineapple, papaya, citrus and kiwi.
- Wheatgerm.
- Seafood and shellfish.
- Cocoa and chocolate.
- Alcohol.
What is wheal size?
Wheal size cannot predict the severity of an allergic reaction: Some patients with anaphylactic sensitivity to insect venom or latex, may have a wheal size as small as 3 mm while, in contrast, others may have wheals of 10 mm or greater to inhalant and other food allergens but show little or no allergic signs if they …
What is a Class 5 allergy?
Class 5: Very high level of allergy (50.00 KUA/L – 99.9 KUA/L) indicative of very high level sensitization. Class 6: Very high level of allergy (≥ 100.0 KUA/L) indicative of very high level sensitization.