# ANC Equation

ANC simply refers to Absolute Neutrophil Count. It involves the numerical measuring of the neutrophil granulocytes available in the blood. Neutrophil granulocytes can also be referred to as polymorphonuclear cells, PMN's, polys, granulocytes or segs. In addition, neutrophils are these categories of white blood cells that protect the body from infections.

The absolute neutrophil count often consists of bigger panel of blood usually, described as the complete blood count.

To derive the ANC Equation, you calculate by measuring the enjoined percentage of the mature neutrophils also called segs or segmented cells and the immature neutrophils. In summary, the mature neutrophils are the white blood cells while the immature neutrophils are the bands.

The ballpark for ANC reference range is usually 1500 to 1800, although this may vary according to study. Absolute Neutrophil Count below 500 cells/uL is described to as sever neutropenia that is a low level of ANC in the body. This condition is dangerous since it can lead to higher exposure of infection. The setting of Chemotherapy is the obvious condition where absolute neutrophil count would be measured.

The left shift or the elevated count as realized by neutrophils can be shown in two ways; when myeloid cells are prematurely released from the bone marrow and during the leukomoid reactions.

To reach the ANC Equation, first get the absolute neutrophil count by adding the percentage of combined neutrophils to percentage of bands. Multiply these results by the total number of the white blood cells then divide your answer by one-hundred. Another method of getting the ANC is by adding the absolute-polys to absolute-bands.

In the first method, we assume that the measurements of white blood cells are cells /uL or K/mL that is thousand cell/mL. For instance, 6,600 cells/uL or 6,600 K/mL. Given that white blood cells are in K/uL at the expense of cell/uL or K/mL, for instance 6.6 K/uL, consider converting the K/uL to cells/uL by multiplying the figure of the white blood cells by one-thousand.

Cells per microliter of blood are the unit for ANC, and its abbreviation is cells/uL. One cubic millimeter is equivalent to one microliter since one liter is the same as one-million cubic millimeters.

As stated before, low conditions of absolute neutrophil count have risks. These risks, also known as NCI risk range from the normal condition of absolute neutrophil to less than five-hundred cubic millimeters. Within the normal limits, the NCI risk is zero. Below two-thousand cubic millimeters to fifteen-hundred cubic millimeters, the NCI risk is one. From less than fifteen-hundred cubic millimeters to one-thousand millimeters, the NCI risk is two while less than one-thousand cubic millimeters to five-hundred cubic millimeters, the risk of NCI is three. The risk, significantly elevates to four where absolute neutrophil count is under five-hundred cubic millimeters.

These conditions result to various classification of neutropenia. For instance, Persons from 1000 cells/mm3 to 1800 have low risk of acquiring infections hence should be under the chemotherapy treatment. Mild neutropenia ranges from less than 1000 mm3 to 500 mm3 and are considered exposed to moderate risk of infections Below 500 mm3 is known as severe neutropenia. These patients are under high risk of infection mainly due to leukopenia that is low amount of white blood cells.

The white blood cells has the following differential in the ANC Equation; Lymphocytes ranges from 20% to 40% , neutrophils range from 50% to 60%, basophils range from 0.5% to 2%, eosinophils range from 1% to 4% and monocytes range from 2% to 9%.

## Equations

• Segments (Segs) and bands as a percentage: WBC * ((segs / 100) + (bands / 100))
• Segments (Segs) and bands as total numbers: WBC * (segs + bands)