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.
Â· just now. Report Abuse. Donated blood lasts for around 35 days as whole blood collected into a bag with anticoagulant and additives which help keep the blood cells alive (dextrose, phosphate and citrate). Plasma that is separated off can be frozen (at minimum -25 degrees Celcius) and kept for one year.