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Dermatophagoides pteronyssinus-specific IgE antibody (serum/plasma)

Published: August 9, 2026Updated: August 16, 2026

This test measures your immune system’s response to a common indoor allergen found in dust mites, which are common triggers for allergic reactions.

Quick summary

["Helps identify if your immune system reacts to dust mites, potentially guiding allergy management strategies."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
102279-7
Short code
D pteronyss IgE RAST
Synonyms
D pteronyss IgE RAST
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
rast
CPT
84484
SNOMED
302774002
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your doctor may recommend this test if you suspect allergies to dust mites, experience symptoms like sneezing, itchy eyes, or asthma triggered by indoor allergens, or if you’ve been exposed to dust mites frequently.

What to Expect During Testing

A small blood sample is drawn from a vein in your arm. The sample is processed to measure your IgE antibodies specific to *Dermatophagoides pteronyssinus*, a common allergen. Results are typically available within 1–3 business days.

Understanding Your Results

A positive result indicates your immune system has produced IgE antibodies against this allergen, suggesting a possible allergic reaction. However, a positive test alone does not confirm a diagnosis of allergy—it helps guide further evaluation.

Common Symptoms This Test May Help Manage

This test is not used to diagnose symptoms like itchy skin, runny nose, or wheezing directly. Instead, it supports identifying potential allergens to tailor treatment plans, such as avoiding dust mites or using allergy medications.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgE to Dust Mite (D. pteronyssinus)

Frequently asked questions

What Does a Positive or Negative Result Mean?
A positive result suggests your body may react to dust mites, but it doesn’t confirm allergy symptoms. Your doctor will consider symptoms, medical history, and other tests to diagnose allergies.
How Often Should I Get This Test?
Results may be repeated if symptoms persist or worsen, or if your doctor suspects changes in exposure to allergens over time. Follow-up testing is often recommended if initial results are inconclusive.
Can I Take Anything Special Before the Test?
No special preparations are needed. However, inform your doctor about any medications, especially antihistamines, that might affect results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy