Are you taking any liver support such as NAC? If not do so at 3600 mgs for now.
Also, know that it’s not unusual for working out to raise liver values to supraphysiologic levels for a week or so. Read this:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2291230/
Not saying that’s "the" culprit in your specific case but odds are it’s playing a part.