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Test Description

The hemoglobin (Hgb) test, as the name suggests, is used to measure the amount of hemoglobin your red blood cells contain. Hemoglobin is a protein that bone marrow produces, and it is stored in red blood cells. Hemoglobin helps the red blood cells in transporting the oxygen from your lungs to the body through arteries. Along with this, it also helps to carry Carbon Dioxide from your body to your lungs through the veins. Hgb is the thing that gives RBC the red color.

Why is the Hemoglobin test recommended?
The primary reason why your healthcare provider will order the Hemoglobin test is to check for anemia. Besides, the Hgb test is often performed along with a hematocrit and CBC test to analyze your blood thoroughly.
It can also be ordered as a part of the routine exam if you have:

  • Common symptoms of anemia such as weakness, dizziness, cold hands, cold feet, and pale skin
  • A diet low in minerals and iron
  • Long term infection
  • Excessive blood loss from surgeries or injuries
  • Family history of sickle cell anemia inherited blood disorder or thalassemia

  • The test can be performed without any special preparation. You only need to visit a hospital or lab. The nurse or lab tech will use a syringe to draw the blood, and then it will be sent for analysis. However, if the healthcare provider has ordered additional tests, then he/she will ask you to fast for a couple of hours before the test. There are no risks for the test; hence you can take the test anytime you want.

    What is the normal range for hemoglobin?
    The normal range of hemoglobin will be different in different age groups. Also, the accurate levels may differ depending on one medical practice to another. But for an adult, the normal range for men is 13.5- 17.5 grams/dL and for women, the range is from 12- 15.5 grams/dL.

    What does the result of the Hemoglobin Test mean?
    If the amount of hemoglobin is lower than the normal range, it indicates that you have anemia. There are many forms of anemia, and each has a different cause. It may include:
  • Iron deficiency
  • Vitamin B-12 deficiency
  • Bleeding
  • Folate Deficiency
  • Kidney Disease
  • Liver Disease
  • Hypothyroidism
  • Thalassemia
  • Cancer that affects the bone marrow
  • If you were diagnosed with anemia before, and the levels are still lower than normal, it means that you need to make some changes in your treatment plan.

    On the contrary, if the hemoglobin results are higher than normal, it indicates conditions such as:
  • Lung disease
  • Dehydration
  • Polycythemia Vera
  • Heavy Smoking
  • Burns
  • Excessive vomiting
  • Extreme physical exercise
  • High altitude
  • Among these conditions, Polycythemia vera can be the worst as it is a blood disorder that is caused when the bone marrow makes too many RBCs. Other conditions can be treated with some specific plan of action. But for other severe conditions, you need to consult your healthcare expert.

    Testing Info

    Alternate Name: Hemoglobin Blood Test

    Test Instructions : Please do not exercise prior to testing. It is best that your blood is taken in a rested state.

    Fasting: No

    Methodology: N/A

    Results In: 2 Working Days

    Note: Turnaround times on results are an estimate and are not guaranteed. The lab may need additional time due to holidays, confirmation/repeat testing, etc. You can contact us to discuss when your results should be ready and we will contact the lab on your behalf immediately.