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Epic Test Code LAB584 Seasonal Inhalants Allergen Profile, Serum

Additional Codes

MML Code: SEAS

LIS Code: APSIP

NY State Approved

Yes

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Reporting Name

Seasonal Inhalants Allergen Profile

Method Name

Fluorescence Enzyme Immunoassay (FEIA)

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  90 days


Ordering Guidance


For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies



Specimen Required


Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial 

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial. 


Specimen Type

Serum

Specimen Minimum Volume

0.75 mL

Reference Values

Class

IgE kU/L

Interpretation

0 

<0.10 

Negative 

0/1 

0.10-0.34 

Borderline/equivocal 

1 

0.35-0.69 

Equivocal 

2 

0.70-3.49 

Positive 

3 

3.50-17.4 

Positive 

4 

17.5-49.9 

Strongly positive 

5 

50.0-99.9 

Strongly positive 

6 

≥100 

Strongly positive 

Reference values apply to all ages.

Report Available

Same day/1 to 3 days

Day(s) Performed

Monday through Friday

CPT Code Information

86003 x 10

Reject Due To

Gross hemolysis OK
Gross lipemia OK

Useful For

Establishing a diagnosis of an allergy to seasonal inhalants

 

Defining the allergen responsible for eliciting signs and symptoms

 

Identifying allergens:

-Responsible for allergic response and/or anaphylactic episode

-To confirm sensitization prior to beginning immunotherapy

-To investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens

Profile Information

Test ID Reporting Name Available Separately Always Performed
RYEG Rye Grass, IgE Yes Yes
JUNE June Grass, IgE Yes Yes
SRW Short Ragweed, IgE Yes Yes
EGPL English Plantain, IgE Yes Yes
LAMQ Lambs Quarter, IgE Yes Yes
BXMPL Box Eld/Maple, S, IgE Yes Yes
OAK Oak, IgE Yes Yes
ELM Elm, IgE Yes Yes
TIMG Timothy Grass, IgE Yes Yes
BIR Silver Birch, IgE Yes Yes

Clinical Information

Clinical manifestations of immediate hypersensitivity (allergic) diseases are caused by the release of proinflammatory mediators (histamine, leukotrienes, and prostaglandins) from IgE-sensitized effector cells (mast cells and basophils) when cell-bound IgE antibodies interact with allergen.

 

In vitro serum testing for IgE antibodies provides an indication of the immune response to allergens that may be associated with allergic disease.

 

The allergens chosen for testing often depend upon the age of the patient, history of allergen exposure, season of the year, and clinical manifestations. In individuals predisposed to develop allergic disease, the sequence of sensitization and clinical manifestations proceed as follows: eczema and respiratory disease (rhinitis and bronchospasm) in infants and children younger than 5 years of age due to food sensitivity (milk, egg, soy, and wheat proteins), followed by respiratory disease (rhinitis and asthma) in older children and adults due to sensitivity to inhalant allergens (dust mites, mold, and pollen inhalants).

Interpretation

Detection of IgE antibodies in serum (class 1 or greater) indicates an increased likelihood of allergic disease as opposed to other etiologies and defines the allergens that may be responsible for eliciting signs and symptoms.

 

The level of IgE antibodies in serum varies directly with the concentration of IgE antibodies expressed as a class score or kU/L.

Cautions

Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists, or in patients in whom the medical management does not depend upon identification of allergen specificity.

 

Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum, and test results must be interpreted in the clinical context.

 

False-positive results for IgE antibodies may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases.

Specimen Retention Time

14 days

Forms

If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen.