ImmunologyAllergy and Immunology

Allergy Profile Without Drugs

Normal Range
Total IgE < 100 kU/L
Sample Type
Serum
Fasting
No
Unit
kU/L

Function

The Allergy Profile Without Drugs is a panel of blood tests that measures the concentration of specific IgE antibodies in response to common environmental and food allergens, excluding pharmaceutical agents. IgE is the antibody class responsible for Type I hypersensitivity reactions, commonly known as allergies.

Why it is Ordered

This panel is ordered to identify the triggers of allergic symptoms such as hay fever, asthma, hives, or digestive issues. Unlike skin prick testing, this blood test is safe for patients with severe eczema or those at risk of anaphylaxis. It provides a quantitative measure of sensitization to various triggers like pollen, dust mites, pet dander, and common foods.

Associated Conditions

  • Allergic Rhinitis: Sensitivity to airborne allergens like grass or tree pollen.
  • Atopic Dermatitis: Eczema flared by environmental or food triggers.
  • Allergic Asthma: Bronchoconstriction triggered by inhaled allergens.
  • Food Allergy: IgE-mediated reactions to peanuts, milk, eggs, or shellfish.

Panel Components

This test is a profile comprising the following specific markers:

House Dust Mite (D. pteronyssinus) Specific IgE
kU/L
Dog Dander Specific IgE
kU/L
Peanut Specific IgE
kU/L
Cow's Milk Specific IgE
kU/L
Wheat Specific IgE
kU/L
Shrimp Specific IgE
kU/L
Alternaria Alternata (Mold) Specific IgE
kU/L
Cockroach (German) Specific IgE
kU/L
Timothy Grass Specific IgE
kU/L
Bermuda Grass Specific IgE
kU/L
Soybean Specific IgE
kU/L
Common Ragweed Specific IgE
kU/L
Cat Dander Specific IgE
kU/L
Egg White Specific IgE
kU/L

Why Context Matters

A 'positive' result on an IgE blood test indicates sensitization, but not necessarily a clinical allergy. Many people have IgE antibodies to a substance but do not experience symptoms when exposed (asymptomatic sensitization). Conversely, recent severe allergic reactions can temporarily deplete IgE levels, leading to false negatives. Furthermore, cross-reactivity (e.g., being 'allergic' to birch pollen and reacting to apples) can complicate the profile, requiring a specialist's interpretation to avoid unnecessary dietary restrictions.

Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.

Clinical References

Source-of-truth databases and clinical guidelines for Allergy Profile Without Drugs:

Research & Guidelines

Related Indicators

Anti HBs Titres

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A.S.O. Titre

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Allergy Profile (Veg, Non-Veg, Inhalants) + Total IgE

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DR

Medically Reviewed by Dr. Binoy Babu, MBBS

Board Certified Doctor • 10+ Years Clinical Experience

Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.

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