"Quantum field theory" is more or less the universally spoken language of modern quantum physics at the research level, regardless of the energy scale. There appears to be widespread confusion that it is somehow a fundamentally different theory than "ordinary quantum mechanics", but this is not so. It is a compact notation that facilitates the treatment of many-particle systems and takes into account the exclusion principle.
The clearest explanation of the connection between the first and second quantization that I am aware of appears in the book Statistical Mechanics: A Set Of Lectures by Feynman. Among other things, it is proved that the first and second quantizations are fully equivalent, as the latter is developed directly from the former.
In short, the answer to your question is yes, but in a vacuous sense.