Hi,
Is your husband on any medications or undergoing any types of medical treatment? Does he have any health conditions? Why did he go to the doctor, and what are his symptoms (that is, why did the doctor order a blood count?)
Without knowing any of this information, all I can say is, sometimes people's white blood cell count gets a little low as your husband's is, but the next time they're checked, it's normal again. Other times, there is a real reason for it, such as that it's a side-effect of medication or a medical treatment or illness, so...
His MCV (average red blood cell size) is just slightly high. Not sure why, but it could be related to whatever is causing him to have a high percentage of monocytes. It should be monitored to see whether it continues to go up.
Monocytes are one of the types of white blood cells. His percentage is high for his age. What did the doctor say about it; are they going to check it again soon?
One possible reason for high monocytes is inflammation of some kind, so again I ask, does your husband have any symptoms or illnesses or diagnoses?
I wish I could tell you more, but I just know 19% monocytes in a 30-year-old is not normal. If it was 10 or 11%, I might say it's probably nothing to even worry about, but 19% indicates something is going on... It needs to be monitored, and if it remains high, then you'll want to insist on further testing to determine the cause.
The neutrophil (another type of white blood cell) % and ANC (absolute neutrophil count) might just be low because the monocytes are high, and once that is resolved, they should return to normal too, so now the question is, why are his monocytes high?
Does the doctor want to run more tests now? Were other tests run that were normal?