| Endogenous IL-;5 pg·mL−1 | Recovery spiked IL-;5 % |
| p-;value | Undiluted | p-;value | Diluted 1:2 | p-;value |
No PI versus low PI | 0 (0) versus 41.8 (75.6) | 0.001 | 26.5 (16) versus 35.1 (21.3) | 0.013 | 36.3 (14.9) versus 59.9 (29.5) | 0.016 |
No. of pairs | 16 | | 10 | | 5 | |
No PI versus high PI | 0 (0) versus 66.1 (124.4) | 0.001 | 25.8 (12.6) versus 28.6 (17.9) | 0.036 | 30.8 (8.9) versus 42.7 (37.4) | 0.045 |
No. of pairs | 14 | | 9 | | 4 | |
Low PI versus high PI | 45 (64.8) versus 85.5 (119.3) | 0.017 | 35.1(28.7) versus 28.6 (25.6) | ns | 69.6 (37.2) versus 59.2 (45.6) | ns |
No. of pairs | 10 | | 6 | | 4 | |