  Pre-white dwarf (PWD) star evolution can be driven by energy losses from
neutrino interactions in the core. Unlike solar neutrinos, these are not the
by-product of nuclear fusion, but instead result from electron scattering
processes in the hot, dense regions of the PWD core. We show that the observed
rate of period change in cool PWD pulsators will constrain neutrino emission in
their cores, and we identify appropriate targets for future observation. Such a
measurement will tell us whether the theories of lepton interactions correctly
describe the production rates and therefore neutrino cooling of PWD evolution.
This would represent the first test of standard lepton theory in dense plasma.
