A vial of blood

White Blood Cell Disorders

Your white blood cells may be affected by disorders such as pancytopenia, neutropenia, and eosinophilia. Understanding your symptoms and diagnosis can help you navigate between choices for treatment.

blood test tube

Leukopenia: Overview and More

Medically reviewed by Doru Paul, MD

Blood sampling by an older man

Monoclonal Gammopathy of Undetermined Significance (MGUS)

Medically reviewed by Doru Paul, MD

Preparing a blood smear for evaluation

Blood Smear: Uses, Side Effects, Procedure, Results

Medically reviewed by Doru Paul, MD

3D rendered Illustration of anatomically correct Monocyte immune system defense cells

How Monocytes Function in the Body

Medically reviewed by Douglas A. Nelson, MD

A white blood cell.

White Blood Cells and Innate and Acquired Immunity

Medically reviewed by Jason DelCollo, DO

Illustration of B-cells

B-Cells in Your Immune System Help Fight Off Infections

Medically reviewed by Keri Peterson, MD

A doctor placing a blood sample down

Eosinophilia: Symptoms, Causes, Diagnosis, Treatment

Medically reviewed by Douglas A. Nelson, MD

Polymorphonuclear Leukocytes White Blood Cells

Medically reviewed by Doru Paul, MD

Chemotherapy: drug injected into catheter in hand

Absolute Neutrophil Count (ANC)

Medically reviewed by Douglas A. Nelson, MD

Doctor holding baby

Causes of Low White Blood Cell Count in Babies

Medically reviewed by Douglas A. Nelson, MD

Woman scratching arm

Symptoms, Diagnosis, and Treatment of Mastocytosis

Medically reviewed by Douglas A. Nelson, MD

Scientist reviewing bone marrow slides

Severe Congenital Neutropenia

By Amber Yates, MD

Neutrophil Cell

Cyclic Neutropenia Symptoms, Diagnosis, and Treatment

By Amber Yates, MD

White blood cell, illustration

White Blood Cell Disorders: Symptoms, Causes, Diagnosis, and Treatment

Medically reviewed by Douglas A. Nelson, MD