Casein (F78), IgE

Alphabetical Test listing

Casein (F78), IgE-4239

  
Casein (F78), IgE
  
4239
  
LAB4239
  
F78
  
Allergen
ImmunoCap
R46
  
Serum
  
  
1.0 mL
  
0.3 mL
  

For more than one allergen, use this formula to calculate the amount of serum required; 50 µL X (# of allergens) + 250 µL = Total amount serum needed

  

Spin

  

Gold serum separator (SST) tube

  
  
  1. Spin
  2. Transfer serum to a False bottom plasma/serum transport vial/tube (AHL)
  
  

Ambient (preferred) - 3 days

Refrigerated - 7 days

Frozen (OK)

  
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
  
AHL - Immunology: I-L
  
Mo - Fr
  
1 - 3 days
  

Fluorescence Enzyme Immunoassay (FEIA)

  

<0.35 kU/L

  

Allergy class severity values

ImmunoCAP IGE Class Reference Values:

Traditionally, allergen tests have been reported with an associated class value of zero to 6, with Class 0 indicating an undetectable allergen level, and Class 6 indicating a strong positive allergen level.

The following chart correlates ImmunoCAP IgE allergen results in kU/L to the associated class, with a suggested interpretation. This chart is applicable to all allergen-specific tests at Allina Health Laboratory, which are performed exclusively on ImmunoCAP assays. Note that the Class Reference Values provided are specific for ImmunoCAP assays and may not be used to interpret allergy tests performed by other (non-ImmunoCAP) methods.

 

 Class  IgE kU/L  Interpretation
0  <0.35  Undetectable
1  0.35 - 0.70  Equivocal
2  0.71 - 3.50  Positive
3  3.51 - 17.50  Positive
4  17.51 - 50.00  Strong positive
5  50.01 - 100.00  Strong positive
6  >100.00  Strong positive
  
86008
  
Yes
  
  
09/07/2004
  
07/29/2021
  
02/17/2020