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.
Interferon also may be injected to treat this disease by stimulating the immune system to slow the overproduction of red blood cells. For itchiness of the skin, our doctors may prescribe medication, such as antihistamines. Some patients with polycythemia vera later develop a blood disorder called myelofibrosis.