Everything You Need to Know About CBC Test

A CBC or complete blood count is a very common blood test that is used to evaluate the overall health of an individual. A part of several routine health check-ups, the CBC test is done in pathology labs to help doctors to diagnose diverse health conditions and diseases, ranging from anaemia to cancer. 

 The test evaluates numerous components and features of the blood, including:

Red blood cells

Red blood cells carry oxygen all over the body. The low RBC count shows that the person is suffering from anaemia or any other condition. 

White blood cells

These cells help the body fight infection. There are five key forms of white blood cells and the CBC test assesses the total number of white cells in the blood. Low counts of white blood cells may be the sign of infection while the raised level can indicate inflammation, a medical reaction, or any other health condition.

Haematocrit (HCT)

HCT test evaluates how much an individual’s blood is made of red blood cells. A lower level may indicate that the person does not have sufficient iron and minerals that aid the body to make red blood cells. 

Mean corpuscular volume

The mean corpuscular volume or MCV is the standard size of the red blood cells in an individual. In case they are larger than regular size, it means the MCV is higher. It occurs due to low folate and vitamin B12 levels. Also, the smaller MCV size indicates that the person has a certain type of anaemia.

Platelets

Platelets help the blood to clot and prevent bleeding.

Why is the CBC test prescribed by doctors?

A CBC test is a common part of many routine health check-ups. However, doctors may prescribe the test for diagnosing a certain health issue, checking the complete health, and monitoring the treatment of patients. Sometimes, depending on the patients’ condition, doctors may also order further tests such as a stool test. 

So, the complete blood count is only a method that doctors use to know about the health of a person. The medical record, signs, and other aspects will be also considered before diagnosis.