Hi Dear. I think it's Hepatic involvement of sarcoidosis
.Although hepatic involvement usually is asymptomatic, however ones LFT could be deranged coz of chronic cholestatic disease, increase in pressure inside vein that carries blood to liver
.Glucocorticoid treatment is first-line therapy for hepatic sarcoidosis, that's is why your doctor has put you on prednisolone
it will improve your general symptoms and abnormal laboratory values . just keep your medications regular and visit your concerning Doctor regularly .