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.
Best Answer: Lots of suspects here! It's doubtful that you would be allergic to lettuce and not other leafy vegetables. It could be pesticides but doubtful. Most restaurants use a mixture to keep lettuce and other salad ingredients fresh. It contains ascorbic acid.