  Recent measurements of the superconducting penetration depth in Ba(Fe_1-x
Co_x)2As2 appeared to disagree on the magnitude and curvature of
{\Delta}{\lambda}_{ab}(T), even near optimal doping. These measurements were
carried out on different samples grown by different groups. To understand the
discrepancy, we use scanning SQUID susceptometry and a tunnel diode resonator
to measure the penetration depth in a single sample. The penetration depth
observed by the two techniques is identical with no adjustments. We conclude
that any discrepancies arise from differences between samples, either in growth
or crystal preparation.
