  In this paper, we consider the gravitational tests for the extended
uncertainty principle (EUP) metric, which is a large-scale quantum correction
to Schwarzschild metric. We calculate gravitational redshift, geodetic
precession, Shapiro time delay, precession of Mercury and S2 star's orbits.
Using the results of experiments and observations, we obtain the lower bounds
for the EUP fundamental length scale $L_{*}$. We obtain the smallest bound
$L_{*} \sim9\times 10^{-2}$m for gravitational redshift, and the largest bound
$L_{*} \sim4\times 10^{10}$m for the precession of S2's orbit.
