Ordering Recommendation

Mnemonic

WKTFOOD

Methodology

Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay

Performed

Sun-Sat

Reported

1-3 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 2.15 mL serum to an ARUP Standard Transport Tube. (Min: 1 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

Test Number
Components
Reference Interval
  Immunoglobulin E
Age Reference Interval (kU/L)
0-5 months 13 or less
6-12 months 34 or less
1-2 years 97 or less
3 years 199 or less
4-6 years 307 or less
7-8 years 403 or less
9-12 years 696 or less
13-15 years 629 or less
16-17 years 537 or less
18 years and older 214 or less

  Allergen, Food, Egg White IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Milk (Cow) IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Peanut IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Soybean IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Wheat IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Oat IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Potato IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Rice IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Corn IgE Less than or equal to 0.34 kU/L
  Allergen, Food, Chocolate IgE Less than or equal to 0.34 kU/L

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.


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

Compliance Category

FDA

Note

Allergens include Chocolate, Corn, Egg White, Milk (Cow's), Oat, Peanut, Potato, Rice, Soybean, Wheat, and IgE, Total Serum.

Hotline History

N/A

CPT Codes

86003 x10; 82785

Components

Component Test Code* Component Chart Name LOINC
0050345 Immunoglobulin E 19113-0
0055013 Allergen, Food, Egg White IgE 6106-9
0055020 Allergen, Food, Milk (Cow) IgE 7258-7
0055024 Allergen, Food, Peanut IgE 6206-7
0055031 Allergen, Food, Soybean IgE 6248-9
0055034 Allergen, Food, Wheat IgE 6276-0
0055040 Allergen, Food, Oat IgE 6190-3
0055041 Allergen, Interp, Immunocap Score IgE 33536-4
0055051 Allergen, Food, Potato IgE 6220-8
0055054 Allergen, Food, Rice IgE 6230-7
0055078 Allergen, Food, Corn IgE 6087-1
0099642 Allergen, Food, Chocolate IgE 6073-1
* 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, Food, West Kentucky Group