  We investigate the turnaround radius of the Reissner-Nordstr\"{o}m deSitter
Spacetime and how the turnaround radius changes if a test particle carries
charge. We also consider the Mart\'{i}nez-Troncoso-Zanelli (MTZ) solution of
conformally coupled gravity and investigate how the turnaround radius changes
for a scalar test charge. In both scalar and electric interaction cases we find
that the Turnaround Radius depends on the particle's energy.
