Table 2

Baseline information to be obtained before commencing MTX

*If the child proves to be negative to any of the above, ideally vaccination should be offered prior to commencing MTX.
Height, weight, and body surface area
Full blood count and differential white cell count
ESR +/− C reactive protein
Renal function tests
Varicella titre, even if there is a history of chickenpox*
MMR titres, if none or primary dose only has been given*