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.
Standard Costing (Explanation) Introduction to Standard Costing. Standard costing is an important subtopic of cost accounting. Standard costs are usually associated with a manufacturing company's costs of direct material, direct labor, and manufacturing overhead.
Jupiterimages/Photos.com/Getty Images. Weighted average costing is one among many different types of inventory cost accounting methods that companies use. Other common methods include the more common last-in, first-out, or LIFO method, and the first-in, first-out, or FIFO method.upiterimages/Photos.com/Getty Images. Weighted average costing is one among many different types of inventory cost accounting methods that companies use. Other common methods include the more common last-in, first-out, or LIFO method, and the first-in, first-out, or FIFO method.