Over-the-Counter Market. 1  Describing a security or trade that does not occur on an exchange. Very often, the OTC market includes securities that are very small and do not trade on an exchange because they do not meet market capitalization requirements. 2  A widespread aggregation of dealers who make markets in many different securities.
Liver tests check the blood for two main liver enzymes: 1  Aspartate aminotransferase (AST), formerly called SGOT; the AST enzyme is also found in muscles and many other tissues besides the liver. 2  Alanine aminotransferase (ALT), formerly called SGPT; ALT is almost exclusively found in the liver.
Alkaline Phosphatase. ALKALINE PHOSPHATASE. Alkaline Phosphatases are a group of enzymes found primarily the liver (isoenzyme ALP-1) and bone (isoenzyme ALP-2). There are also small amounts produced by cells lining the intestines (isoenzyme ALP-3), the placenta, and the kidney (in the proximal convoluted tubules).