Therefore, if you have an 800 square foot garage you actually need 8 square of shingles. Typically asphalt shingles are the least expensive to install at about $130 per square whereas a metal roof will have a longer warranty but will cost anywhere between $300 and $1,000 per square.
Blood transfusions are usually done in a hospital, an outpatient clinic or a doctor's office. A blood transfusion typically takes one to four hours, depending on which parts of the blood you receive and how much blood you need. You're usually seated or lying down for the procedure.
Rent, vehicles & utilities: for offices, testing labs, storage refrigerators, blood mobiles and transport vans for equipment and blood. Losses: Whole blood has a shelf life (refrigerated) of between 3 to 5 weeks, while platelets must be used within 3 to 5 days of collection. Depending on supply & demand of blood types & rH factors between inventories donors, and patients, there will always be some blood that cannot be safely used and must be discarded.