Which is not seen in polycythemia vera :
Ans. is 'b' increased erythropoietin level. In polycythemia Vera increase in erythrocytes occur without any increase in level of erythropoietin. In fact erythropoietin level is decreased due to feedback by increased erythrocytes.
Increased vitamin B12 binding capacity
Increase erythropoietin level
Increase RBC count
Ocular congestion
Polycythemia