Clonal (Primary) Monocytosis
Clonal (primary) monocytosis means a person has too many monocytes in the blood because of a blood-forming stem cell clone—a group of bone-marrow cells carrying acquired DNA changes (somatic ...
Rx Blood, Metabolism, and Infectious Diseases (A – Z)
What “Severe High Monocytes” Means
Severe high monocyte counts—known as monocytosis—refer to a persistently elevated level of monocytes (a type of white blood cell) in the bloodstream, typically exceeding 1,000 cells/µL or more than ...
Moderate High Monocytes Than Normal
Monocytes are one type of white blood cell. They patrol your blood, then move into tissues to become macrophages and dendritic cells, where they help clean up germs and damaged cells. In healthy ...
Mild Higher Monocytes Than Normal (Mild Monocytosis)
Monocytes are a kind of white blood cell that patrols the blood, then moves into tissues to become macrophages or dendritic cells—cells that help clean up debris, fight germs, and coordinate immune ...
High Monocytes
Monocytes are a type of white blood cell made in your bone marrow. They circulate in the blood for about one to three days, then move into tissues all over the body where they become macrophages and ...
Selective B‑Cell Lymphopenia
Selective B‑cell lymphopenia means the number of B lymphocytes (B cells) in the blood is lower than normal, while other white blood cell types (like many T cells or NK cells) may be near normal. B ...
Chronic Lymphopenia
Lymphopenia means your blood has fewer lymphocytes than normal. Lymphocytes are white blood cells that run your immune system—mainly T cells, B cells, and NK (natural killer) cells. They help you ...
Acute Lymphopenia
Acute lymphopenia means your lymphocyte count drops suddenly below the normal range, usually because of a short‑term illness, drug effect, or stress response. In adults, a typical lab cut‑off for ...
Lymphopenia
Lymphopenia means your blood has too few lymphocytes, which are the white blood cells that run much of your immune system. The main lymphocyte types are T cells (especially CD4 and CD8 T cells), B ...
Persistent (Long‑Term) Lymphocytopenia
Lymphocytopenia (also called lymphopenia) means your blood has too few lymphocytes, the white blood cells that drive immune defense (T cells, B cells, and natural killer cells). In adults, many ...
Transient (Short‑Term) Lymphocytopenia
Transient lymphocytopenia is a temporary drop in the number of lymphocytes—key white blood cells that help fight infections—in your bloodstream. Clinically, it’s defined as a lymphocyte count below ...
Secondary (Acquired) Lymphocytopenia
Secondary (acquired) lymphocytopenia is a condition in which the number of lymphocytes—white blood cells essential for adaptive immunity—falls below normal levels (<1.0 × 10⁹/L in adults) due to ...
Primary (Inherited) Lymphocytopenia
Primary (inherited) lymphocytopenia means a person is born with a genetic change that leads to too few lymphocytes—the white blood cells (T cells, B cells, and natural killer/NK cells) that protect ...
NK‑cell Lymphocytopenia
Natural killer (NK) cells are a type of white blood cell that patrols the body, identifying and destroying virus‑infected cells and tumor cells. When NK cells fall below normal levels—a condition ...
B‑cell Lymphocytopenia
B‑cell lymphocytopenia means the number of B lymphocytes (B cells) in the blood is lower than normal for a person’s age. B cells are a type of white blood cell that make antibodies (immunoglobulins) ...
T‑cell Lymphocytopenia
T‑cell lymphocytopenia means the body has too few T lymphocytes (T cells) in the blood. T cells are white blood cells that coordinate the immune system and kill infected or abnormal cells. When their ...
Physiologic Lymphocytopenia
Lymphocytopenia (also called lymphopenia) means a lower‑than‑normal number of lymphocytes in the blood. Lymphocytes are white blood cells that power your immune system—mainly T cells, B cells, and ...
Physiologic Lymphocytopenia
Physiologic lymphocytopenia is a normal, transient drop in circulating lymphocyte counts that occurs in healthy individuals under non‑pathologic conditions. Unlike disease‑related lymphocytopenia, ...
Production / Destruction-Dominant Lymphocytopenia
Production‑dominant lymphocytopenia occurs when the bone marrow cannot produce enough lymphocytes. Lymphocytes are white blood cells vital for fighting infections. In this form, factors such as ...
Dilutional Lymphocytopenia
Dilutional lymphocytopenia is a specific form of lymphopenia (also called lymphocytopenia) in which the absolute number of lymphocytes in the blood is lowered not by destruction or inadequate ...
