  We present a method to compute the responses of meson screening masses to the
chemical potential by Taylor expanding the correlator using lattice QCD
simulation. We start by comparing the free theory lattice results with the
analytical expression. Then, using symmetry arguments, we obtain an expression
for the correlator in a series of the chemical potential at finite temperature.
Using this, we obtain the lowest order correction to the screening mass at a
finite chemical potential for temperatures around 2.5 GeV. Our lattice analysis
is limited to isoscalar chemical potential for the pseudoscalar channel. The
calculations were performed using (2+1)-flavors of the Highly Improved
Staggered Quark (HISQ/tree) action, with the ratio of the strange quark mass to
the light quark mass $m_s/m_\ell=20$ corresponding to pion masses of 160 MeV.
