Normal Blood Oxygen Levels. Healthy people have a normal range of oxygen saturation from 95% â 100%, although levels down to 90% are common and not usually cause for alarm.During exercise, the increased oxygen consumption may reduce blood saturation, but the increased breathing rate and blood flow compensate for this.ecause hemoglobin saturated with CO (carbon monoxide) can not be differentiated from that with oxygen, a pulse oximetry test may indicate the blood level is normal, when in fact the oxygen levels are low. Share.
White blood cells, or leukocytes, are classified into two main groups: granulocytes and nongranulocytes (also known as agranulocytes). The granulocytes, which include neutrophils, eosinophils, and basophils, have granules in their cell cytoplasm. Neutrophils, eosinophils, and basophils also have a multilobed nucleus.
Monocytes account for 2 to 10 percent of all leukocytes. They are agranulocytes, meaning that their cytoplasm lacks granules. These cells spend up to a day in the bloodstream before moving into tissues (generally the liver, lungs and lymph nodes).osinophils. Eosinophils comprise 1 to 6 percent of the total leukocyte count. Like neutrophils, eosinophils migrate from the bone marrow to the extravascular tissue, where they wait for an infection to occur. Eosinophils can survive in this tissue for several weeks.