Absolute neutrophil count

Absolute neutrophil count (ANC) is a measure of the number of

The reference range for ANC in adults varies by study, but 1500 to 8000 cells per microliter is typical. An ANC less than 1500 cells/μL is defined as neutropenia and increases risk of infection. Neutropenia is the condition of a low ANC, and the most common condition where an ANC would be measured is in the setting of chemotherapy for cancer.^{[citation needed]}

Neutrophilia indicates an elevated count. While many clinicians refer to the presence of neutrophilia as a "left shift", this is imprecise, as a left shift indicates the presence of immature neutrophil forms,^{[citation needed]} but neutrophilia refers to the entire mass of neutrophils, both mature and immature. Neutrophilia can be indicative of:

• Premature release of myeloid cells from the bone marrow.
• A leukemoid reaction.

Calculation

ANC = ${\displaystyle (\%neutrophils+\%bands)\times (WBC) \over (100)}$

or

ANC = (Absolute-Polys + Absolute-Bands)

Ranges

^[2]

Related tests

In some cases, a ratio is reported in addition to the sum. This is known as the "I/T ratio".^[3][4]

References