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HelpTest Code SESPF Sesame Seed, IgE, with Reflex to Sesame Seed Component, IgE, Serum
Ordering Guidance
For a listing of allergens available for testing, see Allergens - Immunoglobulin E (IgE) Antibodies
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.6 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Useful For
Evaluating patients with suspected sesame seed allergy
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| SESPR | Sesame Seed Component, IgE, S | No | No |
Testing Algorithm
Testing begins with analysis of total sesame seed IgE. If the sesame seed total IgE result is negative (<0.10 kU/L), testing is complete.
If the sesame seed total IgE result is 0.10 kU/L or more, then sesame seed component (Ses i 1) testing will be performed at an additional charge.
Special Instructions
Method Name
Fluorescent Enzyme Immunoassay (FEIA)
Reporting Name
Sesame Seed Component Reflex, SSpecimen Type
SerumSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 90 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
|
Class |
IgE kU/L |
Interpretation |
|
0 |
<0.10 |
Negative |
|
0/1 |
0.10-0.34 |
Borderline/equivocal |
|
1 |
0.35-0.69 |
Equivocal |
|
2 |
0.70-3.49 |
Positive |
|
3 |
3.50-17.4 |
Positive |
|
4 |
17.5-49.9 |
Strongly positive |
|
5 |
50.0-99.9 |
Strongly positive |
|
6 |
≥100 |
Strongly positive |
Concentrations of 0.70 kU/L or more (class 2 and above) will flag as abnormally high.
Reference values apply to all ages.
Interpretation
If the total serum IgE antibody against sesame seed is detectable (≥0.10 IgE kUa/L), it is possible the patient has been sensitized to the components of sesame seed or other potential substances with cross activity. An additional test utilizing Ses i 1, a specific allergenic sesame seed component IgE antibody, will be performed to further confirm sensitization to sesame seed.
If the total serum IgE antibody against sesame seed is negative (<0.10 IgE kUa/L), the patient lacks detectable sensitization to sesame seed components. A report will be provided without additional testing performed. An oral food challenge may be helpful in the diagnosis of sesame seed allergy.
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 3 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86003
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| SESPF | Sesame Seed Component Reflex, S | 6242-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SESA1 | Sesame Seed, IgE, S | 6242-2 |