Question: how long are liver enzymes elevated with mono?
Answer: Alkaline phosphatase, aspartate aminotransferase (AST), and bilirubin levels peak 5-14 days after onset, and gamma-glutamyltransferase (GGT) levels peak at 1-3 weeks after onset. Occasionally, GGT levels remain mildly elevated for as long as 12 months, but most liver function test results are normal within 3 months.