![]() Marked RBC count increase (> 8 million/ µl in adult women, > 9 million/ µl in adult men):.If the hematocrit is also high the probability to suffer from thrombosis increases. It may consequence of an increase of erythropoietin production due to pulmonary or heart problems. ![]() RBC count is above the normal range and a visit to your doctor is recommended. Moderate RBC count increase (6 - 8 million/ µl in adult women and 6.7 - 9 million/ µl in adult men):.If there is no other test out of the normal range, it is probable that the RBC count returns to normal range in the next assay. It may be due to dehydration, tobacco, physical training, live in high altitude or a consequence of some drugs. RBC count is a bit high, but it is not a matter for concern. Mild RBC count increase (5.5 - 6 million/ µl in adult women and 6.2 - 6.75 million/ µl in adult men):.It is also important to note the difference between the term polycythemia to indicate an increase in RBC count as well as other blood cells (WBC, platelets, etc.) and erythrocytosis to designate an increase in RBC count alone.Įrythrocytosis or a high RBC count means: In erythrocytosis there is an absolute elevation of RBC count, but perhaps not an elevation of hematocrit (It can be seen in case of beta thalassemia minor). In polyglobulia there is an increase in hematocrit (the RBC % in relation with total blood volume). Move to high altitude increases or after increased physical training: In both instances, the underlying reason is a response to an increased need for oxygen.Įrythrocytosis refers to the increase of absolute count of RBCs whereas polyglobulia refers to the relative increase (%) of RBCs volume in relation with blood plasma.Hypoxia: If there is an oxygen deficiency due to some respiratory diseases such as COPD or cystic fibrosis.Drugs: Erythropoietin, more commonly known as EPO, is frequently used in sports doping.Polycythemia vera (PV): It is a genetic disease where the bone marrow produces too many blood cells (RBCs, WBCs and platelets).The main causes to develop an erythrocytosis in a blood test are: RBCs (Red Blood Cells) are also called erythrocytes and a RBC count above the normal range is called erythrocytosis. The RBC count is a count of the number of RBCs (Red blood Cells) per volume of blood (million/µl).
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