But if the liver is inflamed or injured, ALT is released into the bloodstream. Measuring blood levels of ALT can give doctors important information about the liver and whether a disease, inflammation, drug, or other problem is affecting it.
Potatoes are ready for harvest when the foliage first starts to die and turn yellow. Early (new) potatoes can be lifted earlier (no earlier than June ) to get the very tastiest potatoes. In this case, harvest them about a week after the potato plant flowers first appear. New potatoes only produce a couple of handfuls of potatoes per plant, so dig up the whole plant. After flowering.
Assuming you are referring to the oxidation process once peeled potatoes have hit the air. After you peel potatoes, you should either use them as quickly as possible, or better yet, put them in a bowl covered with cold water. This will allow you time to prevent them being oxidized by oxygen.