A white blood cell count of 3.9 is too low. Some things that can cause a low count include viral infections, some cancers, bacterial infections, and diseases of the liver and spleen.
I had a CBC in my doctor office today and he told me my WBC was 2.9. He said I have an infection. But that still doesn't explain a low white blood cell count.
ref. range of total leucocyte count is 5,000 to 10,000/cumm.
if your mean 3.9 thousand /cumm, then it comes in the category of decrease level. and it is called leucopenia.
Assuming you mean 3900 it is considered below normal. The normal range is 4500-10000.
Whoever answered this question with "You probably have a disease. Probably AIDS or HIV. Because the normal range for white blood cells 5,000 to 9,000. Well, you're screwed. lol." is a moron. A high WBC does indicate that there is a disease or bacteria that you are fighting, as white blood cells increase whenever there is an infection present, such as pneumonia, appendicitis, gall stones, and certains types of cancers. It would be wise for you to see your Primary Care Physician as soon as possible. Also, if you are taking any medications - both prescribed and OTC - along with any odd symptoms that you may have been experiencing lately, document these and take the list with you to your next Doctor's appointment. Good luck, and good health!
This means that this person is sick and needs to build up the white blood cell count.
Why my white blood cell count is 5.9??
When you get sick, your white blood cell count is higher than normal your immune system, your white blood cell count can drop to very low levels.