A homocysteine blood test is done to: 1  Help identify vitamin B12 deficiency or folic acid deficiency. 2  Help identify a rare inherited disease (homocystinuria) that causes a deficiency of one of several enzymes needed to convert food to energy.  Help determine a cause for otherwise unexplained blood clots.
Category : Causes of Bed Sores. Common Causes of Bed Sores. Bedsores are damaged skin caused by a lack of proper blood flow to the skin because of pressure. The bedsore can occur in individuals at any age when bedridden, in a chair or wheelchair without the ability to reposition themselves.
Well most bed sores come from extended period of time in one position. At elast 48 hours in one spot. With out moving. Errmm It depends how heavy you are, how clean you and the bed is and if you're going to vary positions....I'd say about 2 weeks, so good luck with that! Don't worry. You'll probably pass out through thirst/hunger before the bed sores set in, so you won't even notice them!