A full haemogram (FHG) test, also known as a complete blood count (CBC), is a blood test that measures the levels of various blood cells, including red blood cells, white blood cells, and platelets. It is a common test that is used to diagnose a variety of medical conditions, such as anemia, infection, and leukemia. The FHG test measures the following: Red blood cell count (RBC): This is the number of red blood cells in a unit of blood. Red blood cells carry oxygen to the tissues. Hemoglobin (Hgb): This is a protein in red blood cells that carries oxygen. Hematocrit (HCT): This is the percentage of blood that is made up of red blood cells. White blood cell count (WBC): This is the number of white blood cells in a unit of blood. White blood cells fight infection. Platelet count: This is the number of platelets in a unit of blood. Platelets help to clot blood. The FHG test can also measure the levels of other substances in the blood, such as electrolytes, proteins, and enzymes. These tests are not always included in a standard FHG test, but they may be ordered by the doctor if they are needed to diagnose a specific condition. The FHG test is a simple and painless procedure that is usually performed in a doctor's office or a laboratory. The patient will need to have a blood sample drawn from a vein in their arm. The results of the test are usually available within a few days. The FHG test is a valuable tool for diagnosing a variety of medical conditions. It is a common test that is ordered by doctors for many reasons, including: To check for anemia, a condition in which the body does not have enough red blood cells. To check for infection, such as pneumonia or sepsis. To check for leukemia, a cancer of the blood. To check for blood clotting problems. To check for kidney disease or liver disease. To check for anemia before surgery. The FHG test is a safe and painless procedure. However, there are some risks associated with any blood test, including: Bleeding at the needle site. Infection. Allergic reaction to the needle or the test solution.