Hemoglobin (Hb)

What Is Hemoglobin ?  Hemoglobin is an iron-rich protein molecule that helps in transport of oxygen from lungs to body tissues and carries back carbon di-oxide from tissues to lungs.

In adults, Hemoglobin is made of four globulin chains (two alpha- globulin chains and two beta-globulin chains) connected to each other, whereas in case of fetus and infants, the hemoglobin structure has 2 gamma globulin chains which is latter replaced by beta globulin chains during the process of growth.

In Hemoglobin Each globulin chain contains an iron containing porphyrin compound called “Heme”. This Heme has the properties of transporting oxygen and carbon di-oxide in our blood.

What is the shape of Hemoglobin?

blood cells

Normally, hemoglobin is round in structure with narrow centers. An abnormal structure of hemoglobin is termed as “Sickle Cell Anemia or Thalassemia”. A normal hemoglobin cell has an average life span of 120 days whereas the sickle cell hemoglobin has comparatively lesser lifespan of 10-20 days.

What is the normal hemoglobin level?

Hemoglobin level of hemoglobin count varies with gender and age:

  • Newborns: 17 to 22 gm/dL
  • One (1) week of age: 15 to 20 gm/dL
  • One (1) month of age: 11 to 15 gm/dL
  • Children: 11 to 13 gm/dL
  • Adult males: 14 to 18 gm/dL
  • Adult women: 12 to 16 gm/dL
  • Men after middle age: 12.4 to 14.9 gm/dL
  • Women after middle age: 11.7 to 13.8 gm/dL

What is a low hemoglobin count symptom?

Stress due to hemoglobin defficiency

Hemoglobin count lower than normal can lead to anemia. There are various reasons of becoming anemic. Here is the list of few of them:

  • Loss of blood from body through excessive bleeding, surgery, traumatic injury.
  • Low intake of iron.
  • Sickle cell anemia syndrome.
  • Kidney failure What is a high hemoglobin count symptom?

Higher hemoglobin count cases are rarely observed as the red blood cell (rbc) production increases comparatively higher to compensate the lesser production of RBC due which proper oxygen supply is not met. This case majorly arises in case of bone marrow dysfunction. Higher than normal hemoglobin levels can be seen in people living at high altitudes and in people who smoke.

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