Hospital again...

There's something not quite right about Dad's blood and kidneys. We were told it was due to the type of feed that he was getting and that it was taxing his kidneys. The doctor's had switched him to a lower density liquid food more than 4 months ago. Still, the problem exists. He's going to stay a few days. They may attempt a scope of his colon to see where the blood loss is occurring. it's not really recommended in his condition, but we may not have an option.