Neutrophils (Absolute)

What is Neutrophils (Absolute)?

Neutrophils (absolute) measures the actual number of neutrophils per microliter of blood. These are the most abundant white blood cells and the body’s first line of defense against bacterial and fungal infections. The absolute neutrophil count (ANC) is critical for assessing infection risk and immune system function.

Why is it Tested?

Doctors order absolute neutrophil counts to assess infection risk, monitor chemotherapy effects, evaluate immune deficiencies, and determine if patients can safely receive treatments that suppress the immune system. It’s essential for managing cancer patients and monitoring medication side effects.

Normal Ranges

What do Abnormal Results Mean?

Abnormal results are not a diagnosis. Always discuss your results with a qualified healthcare provider before making any medical decisions.

Low Neutrophils

Low absolute neutrophil counts (neutropenia) may indicate:

• Chemotherapy or radiation effects
• Bone marrow disorders
• Severe infections (consumption of cells)
• Autoimmune diseases
• Certain medications
• Vitamin B12 or folate deficiency

High Neutrophils

Elevated absolute neutrophil counts (neutrophilia) commonly indicate:

• Bacterial infections
• Physical or emotional stress
• Inflammatory conditions
• Smoking
• Certain medications (corticosteroids)
• Blood cancers (leukemia)

How to Track Over Time

Tracking absolute neutrophil counts is essential for cancer patients receiving chemotherapy, as low counts increase infection risk requiring treatment delays or prophylactic antibiotics. Rising counts typically indicate recovery from illness or treatment, while persistent elevation may warrant investigation for underlying conditions.