Dr. Frank Brettschneider has been president of Port Huron Ear, Nose, and Throat (ENT) for more than 25 years. In that time, Dr. Frank Brettschneider has tested and treated many patients for a broad range of upper respiratory allergies.

1. How Allergy Testing Works
Frank Brettschneider

2. Introduction
 Dr. Frank Brettschneider has been president of Port
Huron Ear, Nose, and Throat (ENT) for more than 25
years. In that time, Dr. Frank Brettschneider has
tested and treated many patients for a broad range
of upper respiratory allergies.
Skin allergy testing operates under the principle that
contact with a particular allergen will garner a
response. Testing typically takes one of two forms,
both of which require the preparation of the allergy in
a solution. The medical team may prepare several
different solutions if a physician wishes to test a
number of different allergens.

3. Allergy Testing
 Many patients undergo what is known as a skin prick
test, in which a medical professional places a drop of
each prepared solution on the patient's forearm or back.
The professional then pricks or scratches the skin with a
needle, so that the solution can flow into the skin. If the
patient is allergic to a tested allergen, a raised red spot
will appear where that particular allergen came into
contact with the needle prick.
If a particular solution does not cause a response but
contains a compound that remains a suspected allergen,
the physician may perform an intradermal test, which
requires the patient to receive an injection of the solution.
This type of allergen introduction is more likely to
generate a response. Physicians must be cautious in
interpretation, however, as intradermal testing more often
leads to false positives.