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 of Shingles. Being a viral infection there is no definitive cure for shingles. However medications can be used to shorten the duration of the illness and to prevent the development of various complications. Antiviral drugs. Acyclovir is the drug of choice for shingles.