Conversation: The conversation between human and AI assistant.
[|Human|] I saw my physician today, because I have been extremely tired/fatigue for the last past week. I had some fasting labs done and my white blood cell count is 4.0. A year ago it was 4.4, 4 months before that it was 4.3; in 2011, it was 4.9; 3 months before that it was4.4. In 2010 my WBC was 4.0 and in 2009; it was3.9. Should I be concerned?
[|AI|]  Hello and welcome to Chat Doctor, The white blood cell counts have remained concentrated around one value. The normal range of white blood cells is between 4-11 thousand per cubic millimeter. Thus, the white blood cell count is on lower side but within normal range. The white blood cell count on lower side is not responsible for tiredness.Instead, you need to get complete hologram to assess the status of red blood cells. Anemia is a common cause of tiredness. So, anemia has to be ruled out in first place. Thanks and take care Chat Doctor.