Hemoglobin Test: Normal Levels, Causes of Low and High Hb

Hemoglobin is a protein that is required in the red blood cells to carry oxygen to various tissues. Also involved in moving carbon dioxide from tissues to the lungs to be excreted through breathing. Proper levels of hemoglobin are essential for delivery of sufficient oxygen, energy production and for health in general. The very common blood test performed is called haemoglobin which helps to detect the amount of haemoglobin in the blood and is used to diagnose various blood disorders and anaemia.

At Molecular Diagnostics and Therapy, we offer reliable blood testing services to help individuals monitor their health and identify potential abnormalities. Understanding your hemoglobin levels can help you take timely steps towards better health.

What Is a Hemoglobin Test?

A haemoglobin blood test is used to determine the amount of haemoglobin in a blood sample. It is a normal part of the Complete Blood Count (CBC) that's ordered to determine the oxygen-carrying capacity of the blood. It is used to measure the amount of haemoglobin in the blood, help diagnose anemia, and diagnose certain kinds of disease. It is also useful as a routine checkup, before or while pregnant, or if someone becomes weak, dizzy, and wants to get revenge in their breathing.

Normal Hemoglobin Levels

The normal ranges for Haemoglobin may vary according to laboratory ranges, pregnancy, and the age and gender of the patient. Haemoglobin in the adult male is 13.5-17.5 whereas in adult female is 12.0-15.5g/dl. During pregnancy, the level of hemoglobin is normal and is 11 g/dl, may vary depending on the trimester. The levels of haemoglobin will vary with age and developmental stage. These estimates are only approximate, and doctors consider the person's health and laboratory tests.

Causes of Low Hemoglobin Levels

Reduced haemoglobin indicates that there is likely to be a deficiency of oxygen in the bloodstream, reaching all parts of the body. The condition when there is a deficiency of red blood cells is called anemia. Multiple health, nutritional, or medical problems may cause a drop in hemoglobin.

Iron is needed for the synthesis of haemoglobin and is one of the common causes of haemoglobin deficiency. Folic acid and B12 are also linked to red blood cell growth. Heavy periods, pregnancy, chronic kidney disease, blood loss, certain infections, and blood disorders are other causes. Another issue could be poor nutritional status resulting in reduced Hb – this might also cause low absorption. Typical signs and symptoms include weakness, dizziness, headache, pallor of the skin, rapid heart rate, fatigue, and tiredness. But in some people, it might not present itself, especially if it occurs over time.

Causes of High Hemoglobin Levels

Increased hemoglobin is an increased level of hemoglobin found in the blood that is above the normal range. This can be due to an overproduction of red blood cells and/or underfilling of blood. An increase in the hemoglobin concentration tends to arise commonly as a transient result of dehydration. Other contributing factors are smoking, high altitudes of residence, chronic lung diseases, certain types of heart disease, and the bone marrow disease, polycythaemia vera, which overproduces red blood cells.

Anyone may experience headaches, dizziness, double vision, fatigue, or a red face. But just because a person doesn't have symptoms doesn't mean that they don't have the condition. Depending on the extent of overgrowth, further medical testing may be necessary to look for the cause.

When Is a Hemoglobin Test Recommended?

A haemoglobin test might be a routine part of your health check-ups or be performed if you have symptoms that indicate you may have anaemia or other blood disorders. This can be ordered for people who have a continuous heart issue, e.g., if an individual experiences fatigue, weakness, dizziness, pale skin, or difficulty breathing (shortness of breath) without any known cause. It is also often used in advance of health treatments, before pregnancy, or if a specific reaction to treatment for anaemia and other health issues is being considered.

How Is the Hemoglobin Test Performed?

A simple blood test is performed to determine the hemoglobin level. A tiny amount of blood is taken from the inside of an arm with a sterile needle (venipuncture) by a healthcare provider. A specimen of the blood is then collected and sent to the laboratory for testing. Generally, within minutes and immediately after the procedure, people can go back to normal work.

Conclusion

Blood hemoglobins tests are an important Blood test that is used to evaluate the capacity of the oxygen-carrying capacity of the blood and to help rule out disease. Hemoglobin levels can be low or high, which may indicate other health problems that may need to be treated. Appropriate health surveillance and medical evaluations can be performed to identify abnormalities early on for appropriate treatment. At Molecular Diagnostics and Therapy, we provide reliable diagnostic testing services to support early detection and better health management. Consult your doctor to understand your hemoglobin test results and determine the next steps for your health.