Symptom: Low hemoglobin count

    A low hemoglobin count is a commonly seen blood test result. Hemoglobin (Hb or Hgb) is a protein in red blood cells that carries oxygen throughout the body.

    In many cases, a low hemoglobin count is only slightly lower than normal and doesn't affect how you feel. If it gets more severe and causes symptoms, your low hemoglobin count may indicate you have anemia.

    A low hemoglobin count is generally defined as less than 13.5 grams of hemoglobin per deciliter (135 grams per liter) of blood for men and less than 12 grams per deciliter (120 grams per liter) for women. In children, the definition varies with age and sex. The threshold differs slightly from one medical practice to another.

    Low hemoglobin count

    A low hemoglobin count can be associated with a disease or condition that causes your body to have too few red blood cells. This can occur if:

    1. Your body produces fewer red blood cells than usual
    2. Your body destroys red blood cells faster than they can be produced
    3. You experience blood loss

    Diseases and conditions that cause your body to produce fewer red blood cells than normal include:

    1. Aplastic anemia
    2. Cancer
    3. Certain medications, such as anti-retroviral drugs for HIV infection and chemotherapy drugs for cancer and other conditions
    4. Cirrhosis
    5. Hodgkin's lymphoma (Hodgkin's disease)
    6. Hypothyroidism (underactive thyroid)
    7. Iron deficiency anemia
    8. Chronic kidney disease
    9. Lead poisoning
    10. Leukemia
    11. Multiple myeloma
    12. Myelodysplastic syndromes
    13. Non-Hodgkin's lymphoma
    14. Vitamin deficiency anemia

    Diseases and conditions that cause your body to destroy red blood cells faster than they can be made include:

    1. Enlarged spleen (splenomegaly)
    2. Porphyria
    3. Sickle cell anemia
    4. Thalassemia
    5. Vasculitis
    6. Hemolysis

    A low hemoglobin count can also be due to blood loss, which can occur because of:

    1. Bleeding from a wound
    2. Bleeding in your digestive tract, such as from ulcers, cancers or hemorrhoids
    3. Bleeding in your urinary tract
    4. Frequent blood donation
    5. Heavy menstrual bleeding

    Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.

    Source: mayoclinic.org

    If you experience signs and symptoms of a low hemoglobin count, make an appointment with your doctor. Signs and symptoms may include:

    • Fatigue
    • Weakness
    • Pale skin and gums
    • Shortness of breath
    • A fast or irregular heartbeat

    Your doctor may recommend a complete blood count test to determine whether you have a low hemoglobin count or whether your signs and symptoms are caused by something else.

    If your test reveals you have a low hemoglobin count, you will likely need more testing to determine the cause. Then your doctor can explain what this means for you.

    Source: mayoclinic.org

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