question: Hello doctor, First of all, I feel just fine. I have no issues with infections, cold and cannot recall the last time when I was sick. I do have allergy-induced asthma and I take Advair and Flunisolide. I had a CBC recently and all values were normal except for WBC which is 3.9. My PCP ordered a repeat CBC with the differential count. This time my WBC is 3.2 Absolute neutrophils 1.54 (reference 1.8 - 7.7). Absolute lymphocytes 1.05 (reference 1.2-3.2).  Eosinophil 10.8 (reference 0-3). Monocytes 8.4 (reference 0-8).  My nRBC's were 0, immature neutrophils and absolute neutrophils low end of normal. For the past eight years, my WBC's were fine but 9-10 years ago they were 3.9 and 3.5. Your advice is appreciated.