Few years ago I felt in a blood test report that the bilirubin was slightly above the normal range. In a latest test it is 1.9 mg/dl. Pls comment.

I'm not worried. Several percent of humankind have Gilbert's, a non-disease with somewhat elevated bilirubin. If you've skipped a few meals in a row and noticed your eyes got a bit yellow when viewed in sunlight, that's you. Or you might be tearing up red blood cells from a mild hemoglobin problem or from exercise. If you seem healthy otherwise, don't worry about it.