Allergy, Dermatophagoides farinae
Allergy, Dermatophagoides farinae
Dermatophagoides farinae (American dust mite) allergy test detects the presence of IgE antibodies in your blood. The presence of higher levels of IgE antibodies in your blood is an indication of allergy. Dermatophagoides farinae is a prevalent type of dust mite allergy that can result in serious allergic reactions in some people. Therefore, undergoing a Dermatophagoides farinae test will confirm Dermatophagoides farinae allergy diagnosis and helps in the prevention of suffering from severe allergic-related complications
Symptoms of Dermatophagoides farinae allergy
Symptoms of Dermatophagoides farinae allergy usually occur within 6 hours after exposure to the dust mite and may last for several weeks. The symptoms range from mild to severe forms and commonly include:
Red patches and rashes
Wheezing
Coughing
Itchy, watery eyes
Stuffy or runny nose
Headache
Stomach pain
Chest tightness
Dizziness
Nausea
Swelling of the lips, tongue or throat
What is Dermatophagoides farinae allergy test used for?
Dermatophagoides farinae allergy test is used in the following cases:
To determine whether allergic symptoms caused are related to Dermatophagoides farinae or not
To detect the level of IgE antibodies in the blood
To monitor an effective treatment plan for allergy relief
Test preparation
No special preparation is required for the allergy, Dermatophagoides farinae test.
Interpretation of the Test Results
The relative amount of IgE antibodies to specific Dermatophagoides farinae components can help identify the strength and type of allergenic response.
The units of measurement for the results are Kilo units per litre (kU/L)
Â
|
Class         |
IgE kU/L |
Interpretation |
|
0Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
<0.35 |
Negative |
|
1Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
0.35-0.69 |
Equivocal |
|
2Â Â Â Â Â Â Â |
0.70-3.49 |
Positive |
|
3Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
3.50-17.4 |
Positive |
|
4Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
17.5-49.9 |
Strongly positive |
|
5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
50.0-99.9 |
Strongly positive |
|
6Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
> or =100 |
Strongly positive |
Â
Deviation from normal levels indicates the following:
·      The likelihood of developing an allergic disease is increased by the presence of IgE antibodies in serum (Class 1 or greater).
 ·     An elevated IgE level is indicative of an allergy to Dermatophagoides farinae.
 ·      Conditions like allergic disease, primary immunodeficiency, parasitic infections, inflammatory diseases, and malignancies show elevated levels of IgE antibodies.
FAQs
How is the Dermatophagoides farinae allergy test performed?
During this blood test, a healthcare professional will take a small amount of blood from a vein in your arm using a small needle, which is then collected in a test tube or vial. This usually takes no longer than five minutes.
What are the risks associated with the Dermatophagoides farinae allergy test?
There are no known risks associated with this test. During a blood test, one may experience minor pain or bruising where the needle was inserted, but most symptoms will subside quickly.
What is the turnaround time (TAT) for the Dermatophagoides farinae allergy blood test?
Test results of an IgE-based blood test are usually available after 2-3 working days. Test results might be mailed or made available online through health portals. Your doctor might also contact you by phone or email to review your test findings or arrange a follow-up appointment
How to prevent Dermatophagoides farinae allergy?
Avoiding the dust mite allergen is the best way to prevent an allergic reaction. You might be able to reduce your exposure by using pillows, quilts, and mattresses that are dust-mite resistant. Replace all your bedroom soft toys with plastic or wooden toys. Use synthetic instead of feather pillows. Your doctor may recommend medications like antihistamines, nasal sprays, decongestants, etc. to treat your allergy symptoms
What food items I should avoid if I have a dust mite allergy?
Tropomyosin, is a major allergen present in dust mites. It is also present in certain food items like shellfish, lobster, crab, and shrimp. So, it is advisable for people with dust mite allergy to avoid foods containing tropomyosin protein.
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