Hi i have 42 on alt should i b concerned i also am at 23 on bun thank you in advance?

Minimal elevations: Mild liver elevations can be due to many factors including fatty liver, medications including statins and tylenol, (acetaminophen) alcohol use, hepatitis viruses, and liver disease to name a few concerns. The BUN is usually a reflection of hydration- drinking enough water generally helps normalize that finding. See your MD to clarify if you need further workup on your findings.