Grand unification imposed by renormalization is applied to distinguish TeV-scale relics of supersymmetric \(SO(10)\) scenarios. Only \(\mathbf{16}\) supermultiplet is allowed either for the breaking pattern of \( SU(5)\) subgroup or that of Pati-Salam.Such matter nevertheless sufficiently reduces the fine tuning involving Higgs mass and provides fruitful variations on neutralino dark matter in the minimal supersymmetric standard model, simultaneously.