Immature to Total Neutrophils Ratio (I:T Ratio) in CBC Data

What is the correct I:T ratio based on the following CBC data?

WBC 3200 Segs 40% Bands 21% Lymphs 35% metas 2% Eos 2%

Answer:

The Immature to Total neutrophils ratio (I:T ratio) is 21/61 or approximately 0.34.

The question asks for the I:T ratio or Immature to Total neutrophils ratio. From the CBC values provided, Segs (mature neutrophils) are 40% and Bands (immature neutrophils) are 21%. To find the I:T ratio, you divide the Bands percentage by the total of Segs and Bands (40 + 21 = 61). Thus, the I:T ratio is 21/61 or approximately 0.34.

Leukocytes including Segs and Bands are imperative white blood cells that play central roles in our immune system. Normal values for Leukocytes can vary, ranging from 4000 to 12,000 cells per µl in various animals. Segs and Bands form part of these Leukocytes.

In addition, peripheral blood also contains other cells such as Lymphocytes, which make up approximately 20-30 percent of all leukocytes and Eosinophils representing about 2-4 percent of the total leukocyte count.