What is this test done for?
The hemoglobin test is done to evaluate the levels of hemoglobin in the blood.
Why is it Done?
The test is ordered as a part of general health check up,
-to screen and to diagnose the conditions which affect red blood cells like anemia -to assess the severity
- to monitor the treatment for anemia
- as part of pre-natal check up
When should it be performed?
It is ordered in the following conditions or when following signs and symptoms are seen:
• Paleness (pallor)
• Shortness of breath
• Polycythemia conditions
• Vision disturbances
• Enlarged spleen
• Ongoing or prolonged bleeding problems
• As a routine check up in treatment of cancers.
How is it done
A blood sample will be collected from a vein in your arm. Fasting is not needed for collection sample.
Adult male: 14-17.5 g/dL
Adult female: 12.3-15.3 g/dL
-Low values indicate anemia. There are many causes of it like blood loss, vitamin B12 deficiency, damage to the bone marrow, bone marrow disorders like aplastic anemia, leukemia type cancers, could also be seen in kidney failures. It is seen low in condition like thalessemia.
- High values are noted in polycythemia, Lung diseases, congenital heart diseases, kidney tumours, dehydration, genetic causes, smoking can lead to high levels of Hb.
A CBC which includes haematocrit will help in assessing and finding the cause of anemia.