What is the Haemoglobin Test? Why is the test done? Everything around this, that you should know, in this post, and of course our doctors are always there to help you. Just fill in your details in the form below and we will answer all your questions for FREE!
What is haemoglobin?
Haemoglobin is a protein molecule which is present in red blood cells that carry oxygen from the lungs to the body tissues and return carbon dioxide from the tissues back to the lungs. Haemoglobin is made up of 4 protein molecules (globulin chain).
Also Read: Folate Test
What is a haemoglobin test?
This test measures the levels of haemoglobin in the blood. If the haemoglobin levels are abnormal, then it may be a sign of anaemia. This test is measured as part of a complete blood count (CBC).
What are the normal levels of haemoglobin?
It depends upon the age, gender of the person, and the beginning of adolescence. The normal ranges are as follows:
- Newborn: 17 to 22 gm/dL
- One week of age: 15 to 20 gm/dL
- One month of age: 11 to 15 gm/dL
- Children: 11 to 13 gm/dL
- Adult males: 14 to 18 gm/dL
- Adult females: 12 to 16 gm/dL
- Male after middle age: 12.4 to 14.9 gm/dL
- Female after middle age: 11.7 to 13.8 gm/dL
Why is a haemoglobin test done?
- Adult males: 24 to 336 ng/mL
- Adult females: 24 to 307 ng/mL
- Newborns: 25 to 200 ng/mL
Why is it used for?
If someone has the symptoms of anaemia such as dizziness, weakness, and cold hands and feet. Then this test is done to measure the haemoglobin.
- A family history of sickle cell anaemia, or thalassemia.
- Any long-term infection.
- Inherited blood disorder.
- Excessive blood loss during the surgical procedure or from an injury.
What does low haemoglobin indicate?
If the haemoglobin levels are lower than the normal range, then it shows anaemia.
- Iron-deficiency
- Vitamin B12 deficiency
- Bleeding
- Leukaemia
- Kidney disease
- Liver disease
- Hypothyroidism
- Thalassemia
What does high haemoglobin indicate?
If the haemoglobin levels are higher than the normal range, then the following conditions show:
- Polycythemia vera
- Lung disease
- Dehydration
- Living at a high altitude
- Burns
- Heavy smoking
- Excessive vomiting
- Excessive physical exertion
