Leukocytes (15 to 20) x 10^9/L are considered high for adults and not high for newborns.
The normal range of leukocytes for adults is (4~10) x 10^9/L and for newborns is (15~20) x 10^9/L. Leukocytes are an important part of the blood, and their detection can be used clinically to diagnose infectious diseases such as bacterial and viral infections, as well as for some non-infectious diseases.
In common bacterial infections such as Staphylococcus aureus and Streptococcus pneumoniae, the total number of white blood cells is usually elevated. Elevated white blood cells are also seen in diseases such as acute hemorrhage, leukemia, acute myocardial infarction, and bronchial asthma.
Common viral infections such as influenza virus, rubella, chicken pox, etc., the total number of leukocytes tested is usually decreased. Leukopenia is also seen in typhoid fever, malaria, systemic lupus erythematosus, and aplastic anemia.
White blood cells (15-20) × 10^9 / L if the test results of newborns, there is no need to worry too much, if the test results of adults, it is on the high side, it is recommended to visit the hospital in a timely manner to identify the causes, and targeted treatment.