Okay so back in April my red blood cell counts were high 5.31(3.70-5.10). Hemoglobin 15.6, hematocrit 46.9. Doctor initially was testing for vitamin D3 deficiency. Had no idea about the red blood cell count he said everything was fine except the D3 deficiency. Now recently I just had a cardiac ablation for heart arrythmia back in Feb 1st, they took blood tests, the counts were lower 5.07 rbc and their refference range was 5.20 to be abnormal. Which I also don't know why every doctors ranges are different. Anyway my point is I don't understand first of all why my doctor didn't tell me My rbc's were high in the first place and now that they have gotten lower now he's diagnosing me with polycythemia? I know he also just recently ordered more blood tests to take another look. But why diagnose me with that if my rbc counts aren't in the flag range. Also is it normal,for rbc's to fluctuate like that. I do remember having a viral infection back in April when they took those blood tests. I'm just a little worried and upset he wouldn't address that until now.