Donating a unit of whole blood or double red cells (2-units) removes iron from your body. You need iron to make new red blood cells. Low levels of iron can cause anemia or make it worse. All blood donors should learn more about iron. 1  Everyone should eat a healthy diet.2  All blood donors should add foods rich in iron to their diet.ou need iron to make new red blood cells. Low levels of iron can cause anemia or make it worse. All blood donors should learn more about iron. 1  Everyone should eat a healthy diet. 2  All blood donors should add foods rich in iron to their diet.
Average cost method. Under the 'Average Cost Method', it is assumed that the cost of inventory is based on the average cost of the goods available for sale during the period. The average cost is computed by dividing the total cost of goods available for sale by the total units available for sale.
2015 Cost vs Value Report. This site compares average cost for 30 popular remodeling projects with the value those projects retain at resale in 100 U.S. markets. Check out this year's trends and how they compare to prior years. Editor's Note: Please see here for an important update.