March 19, 2021
Due to reagent availability issues, the Guava, IgE assay is currently unavailable. 
No alternative testing is available.
Immediately following collection, thoroughly mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Ambient (preferred) - 4 weeks
Refrigerated - 4 weeks
Frozen - 3 months
ImmunoCap
| Class | IgE (kU/L) | Comment | 
| 0 | <0.10 | Negative | 
| 0/1 | 0.10-0.34 | Equivocal/Borderline | 
| 1 | 0.35-0.69 | Low Positive | 
| 2 | 0.70-3.49 | Moderate Positive | 
| 3 | 3.50-17.49 | High Positive | 
| 4 | 17.50-49.99 | Very High Positive | 
| 5 | 50.00-99.99 | Very High Positive | 
| 6 | >99.99 | Very High Positive |