Allergy: Specific IgE
Department of Immunology
Notes
- Specific IgE are available to a large number of antigens however taking a thorough clinical history will facilitate targeted testing which makes good use of resources.
- Blanket request for IgE testing or food allergies will not be processed. Allergen specific IgE results should be interpreted in the context of the clinical history.
- Further information on food allergy in children and young people can be obtained here; NICE Guidelines. If you have any questions regarding adult patients, please discuss with Immunology.
- Low frequency allergens are either referred to Immunology at Southmead Hospital or the Protein Reference Unit at Sheffield Northern General Hospital.
See also: Allergy: Total IgE
Sample Requirements
Adult
5ml Gold-top SST tube or 3.5ml Rust-top gel tube (Trust users only)
Paediatric
1ml Serum Sample
Turnaround Times
2 weeks
Reference Ranges
| Range (kUA/l) | Score | Interpretation |
| 0.00 - 0.35 | 0 | Negative |
| 0.36 - 0.70 | 1 | Weak |
| 0.71 - 3.50 | 2 | Weak |
| 3.51 - 17.50 | 3 | Moderate |
| 17.51 - 50.00 | 4 | Moderate |
| 50.01 - 100.00 | 5 | Strong |
| >100.00 | 6 | Strong |
Time Limit for Add-ons
1 week (whilst stored at 2°C - 8 °C)