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What is the diagnosis of Anemia?

By  ,  National Institute of Health
Jan 08, 2013
4.8 / 5(4 Ratings)

Your doctor will diagnose anemia based on your medical and family histories, a physical exam, and results from tests and procedures.

Because anemia doesn’t always cause symptoms, your doctor may find out you have it while checking for another condition.

Medical and Family Histories

Your doctor may ask whether you have any of the common signs or symptoms of anemia. He or she may ask whether you’ve had an illness or condition that could cause anemia.

Your doctor also may ask about the medicines you take, your diet, and whether you have family members who have anemia or a history of it.

Physical Exam

Your doctor will do a physical exam to find out how severe your anemia is and to check for possible causes. He or she may:

  • Listen to your heart for a rapid or irregular heartbeat
  • Listen to your lungs for rapid or uneven breathing
  • Feel your abdomen to check the size of your liver and spleen

Your doctor also may do a pelvic or rectal exam to check for common sources of blood loss.

Diagnostic Tests and Procedures

Your doctor may order various tests or procedures to find out what type of anemia you have and how severe it is.

Complete Blood Count

Often, the first test used to diagnose anemia is a complete blood count (CBC). The CBC measures many different parts of your blood.

This test checks your hemoglobin and hematocrit (hee-MAT-oh-crit) levels. Hemoglobin is the iron-rich protein in red blood cells that carries oxygen to the body. Hematocrit is a measure of how much space red blood cells take up in your blood. A low level of hemoglobin or hematocrit is a sign of anemia.

The normal range of these levels may be lower in certain racial and ethnic populations. Your doctor can explain your test results to you.

The CBC also checks the number of red blood cells, white blood cells, and platelets in your blood. Abnormal results may be a sign of anemia, a blood disorder, an infection, or another condition.

Finally, the CBC looks at mean corpuscular (kor-PUS-kyu-lar) volume (MCV). MCV is a measure of the average size of your red blood cells and a clue as to the cause of your anemia. In iron-deficiency anemia, for example, red blood cells usually are smaller than normal.

Other Tests and Procedures

If the CBC results show that you have anemia, you may need other tests such as:

  • Hemoglobin electrophoresis (e-lek-tro-FOR-e-sis). This test looks at the different types of hemoglobin in your blood. It can help diagnose the type of anemia you have.
  • A reticulocyte (re-TIK-u-lo-site) count. This test measures the number of young red blood cells in your blood. The test shows whether your bone marrow is making red blood cells at the correct rate.
  • Tests for the level of iron in your blood and body. These include serum iron and serum ferritin tests. Transferrin level and total iron-binding capacity also test iron levels.

Because anemia has many causes, you also may be tested for conditions such as kidney failure, lead poisoning (in children), and vitamin deficiencies (lack of vitamins, such as B12 and folic acid).

If your doctor thinks that you have anemia due to internal bleeding, he or she may suggest sever...

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