Complete Blood Count, Here's What You Should Know

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Complete Blood Count, Here's What You Should Know
Complete Blood Count, Here's What You Should Know

Complete blood count is an examination to find out the complete number of blood cells. Its objectives include detecting disease, monitoring disease progression, and evaluating the effectiveness of treatment

A complete blood count is performed by taking a blood sample, generally from a vein in the arm, to be examined in the laboratory to determine the number of components in the blood.

Complete Blood Count, Here's What You Should Know - Alodokter

The following are the components of blood that are measured in a complete blood count:

  • White blood cells, which fight infection
  • Red blood cells, which carry oxygen from the lungs to the rest of the body
  • platelet cells (platelets), which play a role in the blood clotting process
  • Hemoglobin, which is the oxygen carrier in red blood cells
  • Hematocrit, which is the proportion of red blood cells in the blood

If the number of blood components is more or less than the normal value, it can be a sign of a he alth problem.

A complete blood count can also contain information about the average size of red blood cells (MCV), the amount of hemoglobin in each red blood cell (MCH), and the concentration or relative amount of hemoglobin in each red blood cell (MCHC).

Indication of Complete Blood Count

Complete blood count is part of a he alth check that is carried out regularly. Doctors usually recommend a complete blood count for:

  • Seeing a person's overall he alth condition
  • Diagnosing he alth problems in people who experience complaints or symptoms of a disease
  • Monitoring disease progression in people who have been diagnosed with a disease
  • Evaluating the effectiveness of treatment in patients undergoing therapy or medication

Complete Blood Count Alert

There are several things you need to know before undergoing a complete blood count, namely:

  • The size of the veins of each person is different, as well as the size of the veins in one part of the body with other parts of the body. This can make the process of drawing blood difficult.
  • Normal complete blood count results may differ for each patient, depending on age and gender.
  • An abnormal complete blood count result does not necessarily mean the patient has a specific disease. This is because the results of the examination can be influenced by the menstrual cycle, diet, medications, smoking habits, and pregnancy.
  • Although an abnormal blood cell count can be a sign of a he alth problem, a diagnosis cannot be based solely on a complete blood count. For this reason, other tests or tests are needed to confirm the diagnosis.

Before Complete Blood Count

Patients are usually not asked to fast before undergoing a complete blood count. Patients will be advised to wear short sleeves to facilitate the blood collection process.

Complete Blood Count Procedure

The complete blood count procedure only takes a few minutes. The following are the steps for a complete blood count procedure:

  • Clean the skin area where the blood was drawn with alcohol or antiseptic cleanser
  • Tie an elastic cord on the upper arm so that the blood flow is blocked and the veins are filled with blood
  • Insert a syringe into a vein, then draw the required amount of blood
  • Remove the elastic strap on the arm and cover the injection wound with a plaster to stop the bleeding
  • Bring blood samples that have been taken to the laboratory for further examination

After Complete Blood Count

After taking blood samples, patients can carry out their normal activities. The doctor will give you the complete blood count in a few hours or the next day.

The results of the patient's complete blood count will be compared with the normal size benchmark, according to age and gender. The following is a benchmark for normal complete blood count results for adult men and women in general:

Types of blood cells Blood cell count
White blood cells 3400–9600/microliter
Red blood cells Men: 4, 32–5, 72 million/microliter
Women: 3, 90–5, 03 million/microliter
platelet cells Men: 135,000–317,000/microliter
Women: 157,000–371,000/microliter
Hemoglobin Men: 13, 2–16, 6 grams/deciliter
Women: 11, 6–15 grams/deciliter
Hematocrit Male: 38, 3–48, 6%
Women: 35, 5–44, 9%

A complete blood count that is higher or lower than normal can be a sign of a problem in the patient's body, such as:

  • Infection
  • Inflammation
  • Bleeding
  • Anemia
  • Iron deficiency
  • Polycythemia vera
  • Disorders of the bone marrow
  • Immune system disorders
  • Reaction to drugs
  • Enlargement of the spleen
  • Autoimmune diseases
  • Heart disease
  • Cancer

Side Effects of Complete Blood Count

Patients who undergo a complete blood count will only feel a little pain when the blood is taken. Bruises may also appear at the puncture site for blood collection, but these will disappear in a few days.

Although it is rare, blood sampling is also at risk of causing the following side effects:

  • Hematoma, which is the absorption of blood under the skin
  • Dizziness and feeling faint
  • Bleeding
  • Infection

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