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26239 Allergen, Grape, IgE, Serum (GRAP)

Allergen, Grape, IgE, Serum (GRAP)
Test Code: ALGRPSO
Synonyms/Keywords

​​Vitis vinifera

Useful For

Establishing a diagnosis of an allergy to grape

Defining the allergen responsible for eliciting signs and symptoms

Identifying allergens:

-Responsible for allergic disease 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

Specimen Requirements
Specimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
​Serum​Serum Separator Tube (SST)
Red Top Tube (RTT)​0.5 mL for every 5 allergens requested​0.3 mL​
Collection Processing Instructions

​For 1 allergen: 0.3 mL
For more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL deadspace

Specimen Stability Information
Specimen TypeTemperatureTime
​Serum​Refrigerated (preferred)​14 days
​Frozen​90 days
Performing Laboratory Information
Performing LocationDay(s) Test PerformedReport AvailalbeMethodology/Instrumentation
​Mayo Clinic Laboratories​Monday through Friday​1 to 3 days​Fluorescence Enzyme Immunoassay (FEIA)
Reference Lab
Mayo Clinic Laboratories
Reference Range Information

Performing LocationReference Range












​Mayo Clinic Laboratories
ClassIgE kU/LInterpretation
0<0.10Negative
0/1 0.10-0.34Borderline/equivocal
10.35-0.69Equivocal
20.70-3.49Positive
33.50-17.4Positive
417.5-49.9Strongly positive
550.0-99.9Strongly positive
6> or =100Strongly positive

Reference values apply to all ages.


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.

Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments
​86003​​1​​
Synonyms/Keywords

​​Vitis vinifera

Ordering Applications
Ordering ApplicationDescription
​COM​Allergen, Grape, IgE, Serum (GRAP)
​Cerner​Allergen, Grape, IgE (GRAP)
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
​Serum​Serum Separator Tube (SST)
Red Top Tube (RTT)​0.5 mL for every 5 allergens requested​0.3 mL​
Collection Processing

​For 1 allergen: 0.3 mL
For more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL deadspace

Specimen Stability Information
Specimen TypeTemperatureTime
​Serum​Refrigerated (preferred)​14 days
​Frozen​90 days
Useful For

Establishing a diagnosis of an allergy to grape

Defining the allergen responsible for eliciting signs and symptoms

Identifying allergens:

-Responsible for allergic disease 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

Reference Range Information

Performing LocationReference Range












​Mayo Clinic Laboratories
ClassIgE kU/LInterpretation
0<0.10Negative
0/1 0.10-0.34Borderline/equivocal
10.35-0.69Equivocal
20.70-3.49Positive
33.50-17.4Positive
417.5-49.9Strongly positive
550.0-99.9Strongly positive
6> or =100Strongly positive

Reference values apply to all ages.


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.

For more information visit:
Performing Laboratory Information
Performing LocationDay(s) Test PerformedReport AvailalbeMethodology/Instrumentation
​Mayo Clinic Laboratories​Monday through Friday​1 to 3 days​Fluorescence Enzyme Immunoassay (FEIA)
Reference Lab
Mayo Clinic Laboratories
For billing questions, see Contacts
Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments
​86003​​1​​
For most current information refer to the Marshfield Laboratory online reference manual.