CBC-Complete Blood Count

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Test Description

A complete blood count (CBC) is a blood test used to evaluate your overall health and detect a wide range of disorders, including anemia, infection and leukemia. A complete blood count test measures several components and features of your blood, including: Red blood cells, which carry oxygen White blood cells, which fight infection Hemoglobin, the oxygen-carrying protein in red blood cells Hematocrit, the proportion of red blood cells to the fluid component, or plasma, in your blood Platelets, which help with blood clotting.

Symptoms are:   general fatigue. 


pale skin. 

shortness of breath. 


strange cravings to eat items that aren't food, such as dirt, ice, or clay. 

a tingling or crawling feeling in the legs. 

tongue swelling or soreness. 

A CBC measures the amount of three types of cells in your blood: 

White blood cell count. A white blood cell count, also called a leukocyte count, measures the total number of white blood cells in a sample of blood. These cells protect the body from infection by attacking invading bacteria, viruses, and other foreign materials in the body. Some white blood cells can also attack cancer cells. 

White blood cell differential. A white blood cell differential is a test that measures the number of each type of white blood cell. There are five major types of white blood cells, and each type plays a different role in protecting the body. Your doctor can learn valuable information about your health by measuring the levels of these cells. 












Red blood cell count. Red blood cells carry oxygen throughout your body. A red blood cell count, also called an erythrocyte count, measures the number of red blood cells in a sample of blood. There are several ways to measure red blood cells. Two of the most common are: 


Hematocrit (Hct), the percentage of your blood that is made up of red blood cells


Hemoglobin (Hgb), the amount of the protein in red blood cells that carries oxygen


Platelet count. A platelet count measures the number of platelets in a sample of blood. Platelets help to stop bleeding by forming blood clots. 


The amounts of each of these types of cells have a normal range. Your health care team will note this range on your CBC lab results. A range is used instead of a specific number because a normal amount is different for each person. 

Eat a diet rich in iron. Make sure that you get enough iron through nutritious, whole foods. Eating iron-rich foods can help prevent anemia. Meats and shellfish are an excellent source of iron. Red meats, such as lean beef or beef liver and shellfish, such as clams, oysters and shrimp are excellent choices. Beans and legumes, such as lentils and green peas are high in iron. Leafy greens, such as spinach, kale, and collard greens contain high amounts of iron. Consider eating iron-fortified cereals for breakfast or a snack as a way to get more iron in your diet. All of the iron-rich animal products also contain Vitamin B12, which can also help prevent anemia.

Test Method 1 : The complete blood count may be done in many different health care settings including doctors' offices, clinics, urgent care facilities, emergency rooms, hospitals, and outpatient medical laboratories. 


The complete blood count test is performed by drawing a few milliliters (one to two teaspoons) of blood from a vein. Most commonly, the sample is obtained from a vein that is visible from the skin, such as a vein on the back of the hand or the inner angle of the elbow (antecubital fossa). 


A tourniquet is usually applied to the area proximal to the vein (closer to the center of the body than the vein itself). This technique will make the vein more visible and plump by limiting the blood from the vein going back toward the heart. The tourniquet is only applied for a brief period of time (a few minutes at the most) and it is removed as soon as blood is drawn. 


The skin overlying the vein is cleaned using an alcohol pad, and then a needle is inserted through the area of cleansed skin into the vein below where the tourniquet is applied. The blood is then pulled from the vein via the needle by gently pulling the plunger on the syringe or by a connection of the needle to a special vacuum vial that collects the blood. 


This sample is then taken to the laboratory for analysis, and the complete blood count results may be available within hours after collection. Prompt delivery of the blood sample to the laboratory for analysis is important. A sample that is not delivered in a timely manner may yield inaccurate results. 

Report available : Turn arround time is 24 hours. 

Your doctor may not treat your anemia until the underlying cause has been established. The treatment for one type of anemia may be both inappropriate and dangerous for another type of anemia. 


Anemia Caused by Blood Loss 

If you suddenly lose a large volume of blood, you may be treated with fluids, a blood transfusion, oxygen, and possibly iron to help your body build new red blood cells. Chronic blood loss is treated by identifying the source of bleeding, stopping the bleeding, and, if necessary, providing treatment for iron-deficiency anemia. 


Anemia Caused by Decreased Red Blood Cell Production 

The type of treatment you receive depends on the cause of decreased red blood cell production. 

A person have the following signs and symptoms should get this done: 

general fatigue. 


pale skin. 

shortness of breath. 


strange cravings to eat items that aren't food, such as dirt, ice, or clay. 

a tingling or crawling feeling in the legs. 

tongue swelling or soreness. 

Gender : Mainly occurs in adults, males and females. 

Age : Mainly occurs at the age of 35 to 55. 

Socio Geographic : It is predominant all over the world specially in third word countries. 

Tonsil, heart, spleen
Tonsillitis, Tetralogy of Fallot Cancer, Hairy cell leukemia, Gilbert's syndrome, High blood pressure, Thrombocytosis, Myelodysplastic syndromes, Heart disease, Microcephaly, Lupus