The problem is that most of the heat transfer in an oven is radiant, so a transparent liquid in a transparent dish is going to get very little heat transfer. Though the air is transparent as well, it need much less heat to get to temperature than water does. One option is to use a non-transparent dish.
The emergency treatment of polycythemia (e.g., in hyperviscosity or thrombosis) is by venesection, the removal of blood from the circulation. Depending on the underlying cause, venesection may also be used on a regular basis to reduce the red blood cell count.
Treatment and Cure. There is no cure for carbohydrate intolerance yet and the only way to avoid symptoms is by abstaining form the offending sugar. This can prove very difficult and frustrating since so much food contains one or other hidden carbohydrate.