I've got an elevated SGPT 75U/L in a routine test. What further lab tests should be performed now to check liver function/ other related condition?

My workup. Hepatitis B and C labs. Serum ferritin. Urinary copper for Wilson's. Anti-nuclear antibodies. Ultrasound to look for fat. Consider biopsy if it's now down. In the meantime, think about hitting the fitness circuit really hard and seeing what happens. Best wishes.