What Is Polymorphs In Blood Test?

Are you curious to know what is polymorphs in blood test? You have come to the right place as I am going to tell you everything about polymorphs in blood test in a very simple explanation. Without further discussion let’s begin to know what is polymorphs in blood test?

A complete blood count (CBC) is a common blood test performed to assess various components of the blood, including red blood cells, white blood cells, and platelets. Within the category of white blood cells, there are different types, and two of them are often referred to as polymorphs: neutrophils and eosinophils. These cells play crucial roles in the body’s immune response, and their levels can provide valuable information about a person’s health. In this blog, we will explore what polymorphs are in a blood test, focusing on neutrophils and eosinophils, their functions, and the significance of their levels in the CBC.

What Is Polymorphs In Blood Test?

Polymorphs are a type of white blood cell, also known as leukocytes. They are called “polymorphs” because of the varying shapes of their nuclei, which can appear segmented or divided into multiple lobes when viewed under a microscope. The two primary types of polymorphs are neutrophils and eosinophils, each with distinct functions in the immune system.


  • Neutrophils are the most abundant type of white blood cells in the human body, making up approximately 55-70% of the total white blood cell count.
  • They are a crucial component of the innate immune system, responsible for defending the body against bacterial and fungal infections.
  • Neutrophils are highly mobile and are often the first responders to sites of infection or tissue injury.
  • They engulf and destroy invading microorganisms through a process called phagocytosis.


  • Eosinophils make up a smaller proportion of white blood cells, typically accounting for about 1-6% of the total white blood cell count.
  • Their primary role is to combat parasitic infections and modulate allergic responses.
  • Eosinophils release substances that help destroy parasites and dampen inflammation associated with allergies and asthma.
  • Elevated eosinophil counts can be indicative of allergies, parasitic infections, or certain autoimmune disorders.

Significance Of Polymorph Levels In A Blood Test

Monitoring the levels of neutrophils and eosinophils in a blood test can provide valuable insights into a person’s health. Abnormalities in these levels may indicate underlying medical conditions or infections:

  1. Neutropenia: A lower-than-normal neutrophil count may suggest conditions such as bone marrow disorders, viral infections, or chemotherapy-induced suppression of the immune system. Individuals with neutropenia are at an increased risk of bacterial infections.
  2. Neutrophilia: Elevated neutrophil counts may be seen in response to acute infections, inflammatory conditions, or stress. This is often a normal response to infection but may also indicate underlying health issues.
  3. Eosinophilia: Higher-than-normal eosinophil counts can be a sign of parasitic infections, allergies, asthma, or certain autoimmune diseases. Allergic reactions and eosinophilic disorders can trigger increased eosinophil production.


Polymorphs, specifically neutrophils and eosinophils, are important white blood cells that play distinct roles in the immune response. Monitoring their levels through a blood test, such as a complete blood count (CBC), can help healthcare professionals assess a patient’s health and identify potential underlying conditions. Abnormalities in polymorph levels serve as valuable indicators, guiding medical professionals in diagnosing and treating a wide range of health issues, from infections to inflammatory disorders and allergies. Regular blood tests and consultations with healthcare providers are essential for maintaining good health and addressing any concerns related to polymorph levels or other blood parameters.


What Happens If Polymorphs Count Is High?

A high polymorph count in the blood means that there are infections in the body.

What Happens If Polymorphs Is Low?

What does it mean if your Polymorphs result is too low? Granulocytopenia is an abnormally low concentration of granulocytes in the blood. This condition reduces the body’s resistance to many infections.

What Conditions Increase Polymorphs?

If your blood report shows 88% polymorphs, it indicates an increase in the number of white blood cells called neutrophils, which are a type of polymorphs. It may be a sign of an infection, inflammation, or other medical conditions.

What Is The Reason For Polymorphs High?

What does it mean if your Polymorphs result is too high? When you have more of these than usual in your urine, it’s often a sign of a problem somewhere in your urinary tract. Some of the most common reasons for leukocytes in urine, and other symptoms you might see with them, include: Urinary Tract Infection (UTI):

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