An increased AST level is usually a sign of liver disease. Liver disease is even more likely when the levels of substances checked by other liver blood tests have also increased. An increased AST level may be due to any of the following:
In order to keep itself fresh, the lettuce gives off carbon dioxide, causing a slight odour. This carbon dioxide is not harmful and the odour should disappear quickly once the salad package is opened.
In Section 4.1, you learned the following: 1  Lettuce is frequently used as a salad base, but any number of ingredients can be used in a salad, including meat, fish, starches (such as pasta or potatoes), vegetables, cheeses, and fruit.