The serum adalimumab trough levels at steady-state increased roughly proportionally with dose following 20, 40 and 80 mg subcutaneous dosing every other week and every week Following the administration of 24 mg/ m2 (up to a maximum of 40 mg) subcutaneously every other week to patients with polyarticular juvenile idiopathic arthritis (JIA) the mean trough steady-state (values measured from Week 20 to 48) serum adalimumab concentration was 5.6 ± 5.6 µg/ mL (102 %CV) Humira monotherapy and 10.9 ± 5.2 µg/ mL (47.7% CV) with concomitant methotrexate.