  We study the scenario of dark matter in the minimal left-right symmetric
theory at the TeV scale. The only viable candidate is found to be the lightest
right-handed neutrino with a mass of keV. To satisfy the dark matter relic
abundance, the relic yield is diluted by late decays of the two heavier
neutrinos. We point out that the QCD phase transition temperature coincidences
with the typical freeze-out temperature governed by right-handed interactions,
which helps to alleviate the problem of overproduction. A careful numerical
study reveals a narrow window for the mass of the right-handed gauge boson,
within the reach of the LHC.
