If haemoglobin is not present in body, how much time
Answers
Explanation:
What is a hemoglobin test?
A hemoglobin test measures the levels of hemoglobin in your blood. Hemoglobin is a protein in your red blood cells that carries oxygen from your lungs to the rest of your body. If your hemoglobin levels are abnormal, it may be a sign that you have a blood disorder.
Other names: Hb, Hgb
What is it used for?
A hemoglobin test is often used to check for anemia, a condition in which your body has fewer red blood cells than normal. If you have anemia, your cells don't get all the oxygen they need. Hemoglobin tests are also frequently performed with other tests, such as:
Hematocrit, which measures the percentage of red blood cells in your blood
Complete blood count, which measures the number and type of cells in your blood
Why do I need a hemoglobin test?
Your health care provider may have ordered the test as part of a routine exam, or if you have:
Symptoms of anemia, which include weakness, dizziness, pale skin, and cold hands and feet
A family history of thalassemia, sickle cell anemia, or other inherited blood disorder
A diet low in iron and minerals
A long-term infection
Excessive blood loss from an injury or surgical procedure
What happens during a hemoglobin test?
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.