This is a study to develop a test for radiation exposure in the event of a nuclear event such as the detonation of a nuclear device or widespread radiation exposure. We will collect blood samples from a variety of different types of human subjects whose current medical status could possibly have an effect on the results of the test, such as trauma, burns, infections or a damaged immune system or young children. The goal is to ensure that these conditions do not affect the results of the test.
Protein S is a protein that is very important to the blood clotting process. When people don't have enough Protein S they run the risk of developing blood clots. This study is collecting samples from people who may have abnormal Protein S levels in order to develop a new way of checking the Protein S levels. This test is looking specifically for FREE Protein S. The free protein S is Protein S that is not bound or "tied up" and is therefore more ready to do its job in the clotting process.