The GoPro Hero HD is squarely based off the old model. It has the same mounting system, case, physical shape and user interface. It is so similar, I suggest you read the original short review I did and then come back here for the low down on what makes this one better. Here's the link.
An alanine aminotransferase (ALT) test measures the level of ALT enzyme in your blood. ALT is an enzyme produced by liver cells. It helps the body metabolize proteins. If the liver is damaged or not functioning properly, ALT is released into the blood. This causes ALT levels to increase. The alanine aminotransferase (ALT) test is used to evaluate liver function. The test is also known as a serum glutamate pyruvate transaminase (SGPT) test or alanine transaminase test.
AST (SGOT) Test. This blood test measures an enzyme called aspartate aminotransferase (AST). Enzymes are chemicals that help the cells of your body work. AST is found in red blood cells, liver cells, and muscle cells, including the heart. It is released into the blood when these cells are damaged. This enzyme is also called serum glutamic-oxaloacetic transaminase, or SGOT. The AST level is measured to check the liver, kidneys, heart, pancreas, muscles, and red blood cells. This test is also done to check medical treatments that may affect the liver.