It is not possible to generalize whether white blood cell 2.9×10^9/L is dangerous or not, if it is only white blood cell 2.9×10^9/L, it is generally not dangerous; if it continues to decline, and the absolute count of neutrophils decreases, it is relatively more dangerous, and the chances of infection will be higher.
Leukocyte 2.9×10^9/L mainly refers to 2,900 leukocytes per milliliter of blood when the corresponding blood test is done. Normally, the test result should be between (4.0 and 10.0) x 10^9/L, and the current test result is on the low side.
If the white blood cells are simply low, they are usually not dangerously low and may be caused by simple leukopenia, which usually does not cause clinical symptoms and is not dangerous.
Leukocytes 2.9×10^9/L, if the decline continues in the late stage, and the neutrophil count is less than 0.5×10^9/L, it is considered to be caused by granulocyte deficiency, which is relatively more dangerous, prone to uncontrollable infections, and has a high morbidity and mortality rate.
The presence of white blood cells 2.9 × 10^9 / L, it is recommended to go to the hospital for further examination, to understand the specific changes in the condition, under the guidance of a professional doctor to avoid the danger of treatment.