What is this test?
- This laboratory test is performed on a blood sample to measure the levels of RBCs in the blood. Red blood cells or erythrocytes are the cellular component of the blood. It carries oxygen from the lungs to the whole body and carbon dioxide from the body to the lungs.
Why is this test performed?
This test is performed:
- As a part of complete blood count
- If your doctor suspects anemia or polycythemia
- To screen for various health conditions
- To find the reason for low blood oxygen
- To monitor the efficacy of treatment.
- Which drugs might decrease my RBC count?
Following drugs might lower your red blood cell count:
- Chemotherapeutic drugs
- Chloramphenicol
- Quinidine
- What are the symptoms of low RBC count?
- Shortness of breath
- Fatigue
- Lightheadedness
- Headaches
- Increased heart rate
- Pale skin.
- What are the symptoms of high RBC count?
- Shortness of breath
- Fatigue
- Joint pain
- Sleep disturbance
- Itching skin
- Tenders in the hands or feet.
- What is the effect of leukemia on RBC count?
Leukemia is a blood cancer. It impairs the bone marrow’s ability to produce platelets and red blood cells.
- What are the risks of this test?
Collecting blood from a vein is a very easy procedure and pose only minimum risk, including:
- Bruising
- Bleeding
- Infection
- Lightheadedness
Normal range:
Males: 4.7 to 6.1 million cells per microliter
Females: 4.2 to 5.4 million cells per microliter
Children: 4.0 to 5.5 million cells per microliter
- Interpretation of test results:
Causes of High RBC count:
- Dehydration
- Smoking
- Heart disease
- Pulmonary disease
- Polycythemia Vera (overproduction of RBCs)
- High altitude
- Kidney disease
- Certain drugs.
Causes of Low RBC count:
- Internal or external bleeding
- Blood loss
- Bone marrow failure
- Leukemia
- Pregnancy
- Hemolysis
- Erythropoietin deficiency
- Malnutrition