Complete blood count(CBC CBC is a profile of tests used to describe the quantity and quality of the cellular elements in blood and a few substances in plasma. CBC is a cost-effective screen the detects many abnormalities and disease conditions Bone marrow examination is used in selected instances to answer questions the more readily available cbc cannotComplete blood count (CBC) • CBC is a profile of tests used to describe the quantity and quality of the cellular elements in blood and a few substances in plasma. • CBC is a cost-effective screen the detects many abnormalities and disease conditions. • Bone marrow examination is used in selected instances to answer questions the more readily available CBC cannot