Ordering Recommendation
Mnemonic
SWEXT
Methodology

Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay

Performed

Sun-Sat

Reported

1-2 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Multiple patient encounters should be avoided.

Collect

Serum separator tube. Multiple specimen tubes should be avoided.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 3.25 mL serum to an ARUP Standard Transport Tube. (Min: 1.44 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Hemolyzed, icteric, or lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year

Reference Interval

Allergens included: Alternaria alternata (tenuis), Aspergillus fumigatus, Bahia Grass, Bermuda Grass, Cat Epithelium & Dander, Cottonwood Tree, D. farinae (Mites), Dog Dander, Egg White, Elm Tree, Giant Ragweed, False Ragweed, Hormodendrum (Cladosporium), House Dust Greer, House Dust Stier, Johnson Grass, June Grass/Kentucky Bluegrass, Lamb's Quarters, Box Elder/Maple Tree, Marsh Elder, Mesquite Tree, Milk (Cow's), Mountain Cedar (Juniper) Tree, Oak Tree, Pecan (White Hickory) Tree, Penicillium notatum, Russian Thistle, Timothy Grass, Wheat, White Ash Tree, Sagebrush/Wormwood.

Effective 02/18/2014

Reporting Range
(reported in kU/L)
Probability of IgE Mediated
Clinical Reaction
Class Scoring
Less than 0.10 No significant level detected 0
0.10 - 0.34 Clinical relevance undetermined 0/1
0.35 - 0.70 Low 1
0.71 - 3.50 Moderate 2
3.51 - 17.50 High 3
17.51 - 50.00 Very high 4
50.01 - 100.00 Very high 5
Greater than 100.00 Very high 6

Interpretive Data

Allergen results of 0.10-0.34 kU/L are intended for specialist use as the clinical relevance is undetermined. Even though increasing ranges are reflective of increasing concentrations of allergen-specific IgE, these concentrations may not correlate with the degree of clinical response or skin testing results when challenged with a specific allergen. The correlation of allergy laboratory results with clinical history and in vivo reactivity to specific allergens is essential. A negative test may not rule out clinical allergy or even anaphylaxis.

No compliance statements are in use for this test.

Note
Hotline History
N/A
Components
Component Test Code* Component Chart Name LOINC
0050910 Allergen, Weed, Marsh Elder IgE 6232-3
0055001 Allergen, Fungi/Mold, A. alternata IgE 6020-2
0055003 Allergen, Tree, Box Elder/Maple Tree IgE 7155-5
0055006 Allergen, Animal, Cat Dander IgE 6833-8
0055007 Allergen, Tree, Mountain Cedar Tree IgE 6178-8
0055010 Allergen, Tree, Cottonwood Tree IgE 6090-5
0055013 Allergen, Food, Egg White IgE 6106-9
0055014 Allergen, Weed, False Ragweed IgE 6115-0
0055017 Allergen, Grass, June/Kentucky Blue IgE 6153-1
0055020 Allergen, Food, Milk (Cow) IgE 7258-7
0055027 Allergen, Weed, Russian Thistle IgE 6234-9
0055029 Allergen, Weed, Sagebrush/Wormwood IgE 6286-9
0055032 Allergen, Grass, Timothy Grass IgE 6265-3
0055034 Allergen, Food, Wheat IgE 6276-0
0055038 Allergen, Fungi/Mold, Hormodendrum IgE 6075-6
0055041 Allergen, Interp, Immunocap Score IgE 33536-4
0055042 Allergen, Tree, Elm Tree IgE 6109-3
0055045 Allergen, Tree, Oak Tree IgE 6189-5
0055047 Allergen, Grass, Johnson Grass IgE 6152-3
0055061 Allergen, Fungi/Mold, A. fumigatus IgE 6025-1
0055064 Allergen, Mites, D. farinae IgE 6095-4
0055070 Allergen, Grass, Bermuda Grass IgE 6041-8
0055073 Allergen, Tree, White Ash Tree IgE 6278-6
0055080 Allergen, Fungi/Mold, P. notatum IgE 6212-5
0055084 Allergen, Weed, Giant Ragweed IgE 6124-2
0055091 Allergen, House Dust Greer IgE 9828-5
0055092 Allergen, House Dust Stier IgE 7425-2
0055140 Allergen, Tree, Mesquite Tree IgE 6173-9
0055145 Allergen, Tree, Pecan Tree IgE 6209-1
0055151 Allergen, Grass, Bahia IgE 6034-3
0055160 Allergen, Weed, Lambs Quarters IgE 6156-4
0099568 Allergen, Animal, Dog Dander IgE 6098-8
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
Allergens, Inhalants, Southwest Extended Profile