Median infliximab titres 4 weeks after stratification of infusion according to the presence or absence of antibody to infliximabs
| No IS | IS | |||
|---|---|---|---|---|
| No ATI | ATI | No ATI | ATI | |
| ATI, antibody to infliximab; IFX, infliximab; IQR, interquartile range; IS, immunosuppressives. | ||||
| Median (IQR) IFX levels (μg/ml) | 15.1 (11.6–21) | 1.4 (1–3.13) | 8 (5–13.7) | 4.7 (2.35–8.7) |
| Maximum IFX (μg/ml) | 21 | 17.6 | 33.4 | 31 |