Normal hemoglobin level in pregnant women

When a pregnant woman goes to the hospital for a physical examination, the first thing she needs to test is her hemoglobin level. Because each person has different test results at different ages, and has their own set of regular standards, here I will introduce to you what the normal range is. When doing this examination, you must clearly understand its importance to our body.

Normal range

Male: 130~175g/L (13.0-17.5g/dl);

Women: 115~150g/L (11.5-15.0g/dl);

For newborns: 170~200g/L (17.0-20.0g/dl).

Inspection Introduction

Hemoglobin, also known as hemoglobin, is the main component of red blood cells. It can combine with oxygen and transport oxygen and carbon dioxide.

Clinical significance

The clinical significance of increased or decreased hemoglobin is basically similar to that of red blood cell count, but hemoglobin can better reflect the degree of anemia.

Increased hemoglobin may occur in the following situations:

Physiological increase: seen in plateau residents, fetuses and newborns, intense activities, fear, cold water baths, etc.;

Pathological increase: seen in severe congenital and acquired cardiopulmonary diseases and vascular malformations, such as tetralogy of Fallot, cyanotic congenital heart disease, obstructive pulmonary emphysema, cor pulmonale, pulmonary artery fistula or pulmonary venous fistula, and abnormal hemoglobin disease with low oxygen-carrying capacity; also seen in certain tumors or kidney diseases, such as renal cancer, hepatocellular carcinoma, nephroembryoma, hydronephrosis, polycystic kidney, etc.

Decreased hemoglobin is seen in the following situations:

Physiological reduction: Infants from 3 months to children under 15 years old, the hematopoietic system has a relative deficiency of hematopoiesis due to rapid growth and development, which is generally 10%-20% lower than that of normal people. In the middle and late stages of pregnancy, the blood is diluted due to the increase in blood volume during pregnancy. In the elderly, the bone marrow hematopoietic function gradually decreases, which may lead to a decrease in red blood cell and hemoglobin content.

Pathological reduction:

Bone marrow hematopoietic failure, such as aplastic anemia and anemia associated with myelofibrosis;

Anemia caused by deficiency or utilization disorder of hematopoietic substances, such as iron deficiency anemia, megaloblastic anemia caused by folic acid and vitamin B12 deficiency;

Anemia caused by excessive destruction of red blood cells due to hereditary defects in red blood cell membranes or enzymes or external factors, such as hereditary spherocytosis, thalassemia, paroxysmal nocturnal hemoglobinuria, abnormal hemoglobinopathy, immune hemolytic anemia, major surgery with extracorporeal circulation of the heart, hemolytic anemia caused by certain biological and chemical factors, and anemia caused by certain acute or chronic blood loss.