The scaling relations don't distinguish the critical exponents below and above the critical value. In the mean field level, I understand these critical exponents are the same whether one approaches the phase transition from the order phase or from the disorder phase. However, beyond the mean field treatment, are they always the same?

Are there examples that they can be different below and above the critical value? Or are there some theoretical arguments that the must be the same? Can anyone give me some hints or good reference?