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HelpTest Code TUNAL or LAB640 IgE Tuna, Serum
Specimen Requirements
| Container Type: |
Optimal: Gold Acceptable: Red
|
| Optimal Collection Volume: |
4.5mL; full tube |
| Minimum Volume: |
3 mL |
| Collection Instructions: |
Gently invert the sample 5-6 times after collection. |
| Specimen Transport: |
Refrigerate |
| Processing Instructions: |
1. Allow the specimen to clot for 30 minutes. 2. Centrifuge specimen within 2 hours of collection. 3. After centrifugation, specimen tubes without a gel barrier should have the serum aliquoted to a false bottom container. 4. Keep serum refrigerated until testing can be performed. |
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated | 7 days |
| Room Temperature | 24 hours |
Specimen Rejection Criteria
Quantity not sufficient
Useful For
Determining a diagnosis of an allergy to tuna.
Methodology
Phadia ImmunoCAP - Fluorescence enzyme immunoassay
Reference Ranges
| Specific IgE - All Ages | ||
|---|---|---|
| Value (kU/L) | Interpretation | Class |
| < 0.10 | Negative | Negative |
| 0.10 - 0.35 | Equivocal/Very Low | Class 0/1 |
| 0.36 - 0.70 | Low level of allergy, indicative of ongoing sensitization | Class 1 |
| 0.71 - 3.50 | Moderate level of allergy, indicative of stronger ongoing sensitization | Class 2 |
| 3.51 - 17.50 | High level of allergy, indicative of high-level sensitization | Class 3 |
| 17.51 - 50.00 | Very high level of allergy, indicative of very high-level sensitization | Class 4 |
| 50.01 - 100.00 | Very high level of allergy, indicative of very high-level sensitization | Class 5 |
| > 100.00 | Very high level of allergy, indicative of very high-level sensitization | Class 6 |
Interpretive
Specific IgE
Positive results indicate the possibility of allergic disease.
Negative results may rule out allergy, except in rare cases of allergic disease induced by exposure to a single allergen.
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.
Source: Mayo Clinical Labs
Day(s) Performed
Monday through Friday
Expected TAT
Same day or 1-3 days
Performing Laboratory
Bronson Laboratory, Chemistry - Kalamazoo
Sample Retention Time
7 days
CPT Code
86003
LOINC Code
6270-3