About This QuizDo you want to know what you're allergic to? Wonder no more. There are several options available for allergy testing, some of which are rather inexpensive and quick. Take this quiz and find out which allergy test best suits your needs.
Who is qualified to perform allergy tests in the United States?
any general health care practitioner
only family doctors
only board certified allergy specialists
In the United States, only board certified allergy specialists can administer an allergy test. These are the only health care professionals that are permitted to do allergy pricks and intradermal skin testing.
Skin titration is an allergy test whereby allergens:
are injected into the skin
are placed on the skin
Skin titration, also known as the Rinkel method, involves placing allergens on top of your skin. This is not a well-supported allergy testing method.
are mixed with your skin cells in a petri dish
The radioallergosorbent test is a way of screening for allergies. What does the radioallergosorbent test measure?
antibodies related to allergens
The radioallergosorbent test (RAST), measures IgE antibodies. For example, if you have a high number of pollen IgE antibodies you are probably allergic to pollen.
What are eosinophils?
Eosinophils, also known as allergy cells, can typically be found in the nasal passages of someone who is suffering from nasal allergy symptoms. If a nasal allergy is suspect, your physician my take a nasal smear to see if eosinophils are present
allergy related histamine
How does a physician test for allergies in a scratch test?
The physician scratches your skin with an allergen.
The physician pricks your skin and places a small drop of the allergen inside.
A scratch test involves placing a small amount of an allergen inside a small prick on your skin. If you react to the allergen, a large bump, similar to a hive, will form.
The physician gives you a dose of an allergen and sees whether you have a “scratch reaction.”
What is an advantage of the allergy scratch test?
It is inexpensive.
It is painless and quick.
both of the above
The scratch test is inexpensive compared to other allergy tests. It's also relatively painless as the pricks do not hurt, and you get immediate results, within 20 minutes.
Why is intradermal testing unreliable?
It yields too many false positives.
Although intradermal testing tends to be more sensitive than the scratch test, intradermal testing yields false positives too often. This means that an intradermal test may indicate you are allergic to a certain allergen, when in the real world you are not allergic to that allergen.
It yields too many false negatives.
It yields too many true negatives.
Who would not be able to do a scratch allergy test?
People with severe eczema.
People taking antihistamines.
both of the above
Although the scratch test is the most economic and easiest allergy test to administer, it's not for everyone. People with severe eczema and people taking antihistamines cannot have a scratch test.
What does a physician do during a challenge allergy test?
A physician gives you increasingly higher doses of an allergen through oral administration or inhalation.
During a challenge test, you would either inhale or ingest increasingly higher doses of a suspected allergic substance until you begin to have an allergic reaction.
A physician injects you with increasingly higher doses of an allergen.
A physician rubs increasingly higher doses of an allergen on your skin.
What type of allergens are tested in a challenge allergy test?
allergy to drugs
allergy to food
both of the above
The challenge test is predominantly used for testing allergies related to prescription medication and food. It is an expensive test to administer and may lead someone to have an anaphylactic response.