1 Having high or low cholesterol does not exclude a person from donating blood. 2  Potential blood donors may be temporarily prevented from donating if they have a low level of iron (hematocrit) in their blood.
Headline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.eadline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.
The various standard phrases to describe oven temperatures include words such as cool to hot or very slow to fast. For example, a cool oven has temperature set to 90Â°C (200Â°F), and a slow oven has a temperature range from 150â160Â°C (300â325Â°F).he various standard phrases to describe oven temperatures include words such as cool to hot or very slow to fast. For example, a cool oven has temperature set to 90Â°C (200Â°F), and a slow oven has a temperature range from 150â160Â°C (300â325Â°F).