  We compute corrections to both the isovector anomalous magnetic moment and
the isovector electromagnetic current of the nucleon to $O(p^3)$ in the
framework of covariant two-flavor Baryon Chiral Perturbation Theory. We then
apply these corrections to lattice data for the anomalous magnetic moment from
the LHPC, RBC & UKQCD and QCDSF collaborations.
