Table 2 Number of food challenges with or without a significant decrease in FeNO (> 6 ppb)
From: Exhaled nitric oxide decreases after positive food-allergen challenge
Time after last antigen dose | 30 min | 60 min | 90 min | 120 min | ||||
|---|---|---|---|---|---|---|---|---|
Outcome of food challenge | Pos. | Neg. | Pos. | Neg. | Pos. | Neg. | Pos. | Neg. |
ΔFeNO >6 ppb | 3 | 5 | 7 | 4 | 7 | 4 | 5 | 2 |
No change in FeNO | 13 | 30 | 8 | 33 | 7 | 33 | 10 | 31 |
P= | 1 (n.s.) | 0.003 | 0.005 | 0.08 (n.s.) | ||||