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Dog Dander-Specific IgE, Radioallergosorbent Test (RAST), Qualitative (Deprecated)

Published: August 9, 2026Updated: August 17, 2026

A blood test that detects IgE antibodies to dog dander, helping evaluate possible allergic sensitization to dogs.

Quick summary

["A positive result suggests an immune sensitization to dog dander but must be interpreted alongside allergy symptoms and exposure history."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
15685-1
Short code
Deprecated Dog Dander IgE RAST Ql
Synonyms
Deprecated Dog Dander IgE RAST Ql
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

What is this test?

This test looks for IgE antibodies directed against proteins in dog dander, which is material shed from a dog's skin, hair, and saliva. It is a form of allergy testing and has been deprecated in favor of current allergy-testing methods.

Why might I need this test?

A clinician may order it when symptoms such as sneezing, congestion, wheezing, or itchy skin occur around dogs. It can help identify whether dog dander is a possible trigger.

How is the test performed?

A blood sample is collected, and the laboratory measures IgE antibodies to dog dander using an immunoassay-based method. Results are reported qualitatively, generally as positive or negative.

How do I prepare for the test?

No special preparation is usually required for a blood draw. Tell your clinician about any allergy medicines, recent dog exposure, and other allergic conditions; do not stop prescribed medicines unless instructed.

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.

◆Associated findings1

Short name

Dog dander IgE

Frequently asked questions

Does a positive result mean I am allergic to dogs?
It indicates sensitization to dog dander, but a clinician must correlate the result with your symptoms and exposure history before diagnosing an allergy.
Can this test be used to diagnose asthma?
No. It evaluates sensitization to dog dander and does not diagnose asthma or another respiratory condition by itself.
Why is this test marked as deprecated?
It has been replaced by newer allergy-testing methods. Your clinician can determine whether an alternative test is appropriate.
  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 17, 2026. · Read our editorial policy