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Hemoglobin Hb (BLOOD)

Hemoglobin Hb (BLOOD)


"Hemoglobin is the iron-containing protein found in all red blood cells (RBCs) that gives the cells their characteristic red color. Hemoglobin enables RBCs to bind to oxygen in the lungs and carry it to tissues and organs throughout the body. It also helps transport a small portion of carbon dioxide, a product of cell metabolism, from tissues and organs to the lungs, where it is exhaled. The hemoglobin test measures the amount of hemoglobin in a person's sample of blood


If your blood sample is being tested only for hemoglobin, you can eat and drink normally before the test. If your blood sample will be used for other tests, you may need to fast for a certain amount of time before the sample is taken. Your doctor will give you specific instructions.


A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.

Testing time

The results are usually available after 1-2 days.

Report delivery time

Theresultsare usually available after 1-2 days.

Normal range

For men= 13.5 to 17.5 grams per deciliter

  • For women= 12.0 to 15.5 grams per deciliter

Result explanation

There are many reasons your hemoglobin levels may be outside the normal range.

Low hemoglobin levels may be a sign of:

  • Different types of anemia
  • Thalassemia
  • Iron deficiency
  • Liver disease
  • Cancer and other diseases

High hemoglobin levels may be a sign of:

  • Lung disease
  • Heart disease
  • Polycythemia vera, a disorder in which your body makes too many red blood cells. It can cause headaches, fatigue, and shortness of breath.


Ahemoglobin testis often used tocheckforanemia, a condition in which your body has fewer red blood cells than normal. If you haveanemia, your cells don't get all the oxygen they need.

Common uses

The hemoglobin test is often used to check for anemia, usually along with a hematocrit or as part of a complete blood count (CBC). The test may be used to screen for, diagnose, or monitor a number of conditions and diseases that affect red blood cells (RBCs) and/or the amount of hemoglobin in blood.

Customer support

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