Understanding Low WBC, RBC, and HCT: Potential Causes & What They Mean

Low white blood cell (WBC) count (leukopenia) may indicate:

* Bone marrow failure

* Viral infection, such as influenza or mononucleosis

* Bacterial infection, such as typhoid fever or tuberculosis

* Autoimmune disease, such as lupus or rheumatoid arthritis

* Certain types of cancer, such as leukemia or lymphoma

Low red blood cell (RBC) count (anemia) may indicate:

* Iron deficiency

* Vitamin B12 deficiency

* Folate deficiency

* Chronic disease, such as kidney disease or cancer

* Blood loss, such as from a heavy menstrual period or gastrointestinal bleeding

Low hematocrit (HCT) may indicate:

* Anemia

* Dehydration

* Kidney disease

* Liver disease

* Heart disease

However, it is important to remember that these symptoms are not always indicative of a serious underlying condition. Talk to your doctor if you are concerned about your test results or if you have other symptoms, such as fever, weight loss, or fatigue.