Erythropoietin Test
Booked 11 timesAlso known as:
Serum Erythropoietin, EPO, Epogen, Haematopoietic, Haemopoietin, Polycythaemia
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Anaemia, Polycythaemia, Bone Marrow Disorders, Kidney failure, Tumours of the kidney
Overview
The hormone erythropoietin (EPO) is predominantly produced by the kidney and liver. Red blood cells (RBCs) transport oxygen from the lungs to the rest of the body. EPO plays an important role in RBC production. The erythropoietin test measures the level of erythropoietin in the blood.
The kidneys produce and release erythropoietin into the bloodstream. Erythropoietin forms in response to low blood oxygen levels (hypoxaemia). The amount of erythropoietin released depends on the amount of oxygen in the blood and on kidney functioning.
EPO in the bone marrow increases red blood cell synthesis. The hormone is active for a brief time. After its function, EPO gets eliminated in the urine. The kidneys reduce EPO production as blood oxygen levels return to normal or near normal.
In conditions where there is damage to the kidney and kidneys don't create enough erythropoietin, the body produces too few RBCs. Reduced RBC in the blood leads to anaemia.
Erythropoietin maintains the blood balance by increasing the production of red blood cells in the bone marrow. Erythropoiesis is a vital function since all cells in the body require a constant supply of blood and oxygen to remain healthy.
Without new red blood cells, the body's organs and tissues may suffer from hypoxia or a shortage of oxygen. Hypoxia can cause cells to behave differently, which leads to sickness or cell death in the area.
If the bone marrow does not respond to the stimulation by EPO, the person may become anaemic. The anaemia might happen as a result of some bone marrow problems or chronic diseases like rheumatoid arthritis.
In conditions that reduce the amount of oxygen, such as lung illness, the body may generate more EPO as a compensatory mechanism. People residing at high altitudes and chronic cigarette smokers may have greater EPO levels.
RBC production increases with too much erythropoietin, which can happen with some benign and malignant kidney tumours. Erythropoietin values increase in several other cancers (polycythemia or erythrocytosis). Increased RBCs can increase blood viscosity, which can cause high blood pressure (hypertension), blood clots (thrombosis), heart attack or stroke.
The primary purpose of the erythropoietin (EPO) test is to determine the cause of anaemia. A complete blood count (CBC) with abnormal results, such as a low red blood cell (RBC) count, low haemoglobin and low haematocrit, is followed up with an EPO test. These tests aid in the diagnosis of anaemia and provide information about the underlying cause.
Erythropoietin testing is done to see if a lack of EPO is causing or exacerbating anaemia.
An erythropoietin test is used for the diagnosis of chronic renal diseases. EPO is used to see if the kidneys are still producing enough erythropoietin or not. Testing can help the doctor to decide about erythropoietin replacement therapy. If the erythropoietin level is low
erythropoietin replacement therapy increases red cell synthesis in the bone marrow.
Other names of the erythropoietin test
- Haemopoietin
- Epogen
- Serum Erythropoietin
- Polycythaemia
- Haematopoietic
What does the erythropoietin test or measure and who is this prescribed?
The erythropoietin test measures the level of hormone erythropoietin in the blood sample.
The doctor recommends the erythropoietin test when an individual complains of the following conditions.
- Anaemia that does not appear to be caused by iron deficiency, vitamin B12 insufficiency
- Anaemia does not appear due to shortened lifespan of red blood cells (RBCs; haemolysis) or heavy bleeding
- When the RBC count, haemoglobin and haematocrit are all low
- When reticulocyte count is abnormally low
- In those who have chronic kidney illness
- When a complete blood count reveals an increased number of RBCs as well as a high hematocrit and haemoglobin
- When a doctor suspects you have a bone marrow problem like myeloproliferative neoplasms (MPNs) or myelodysplastic syndrome
Erythropoietin test results are advised by the doctor to
- To determine the difference between primary and secondary polycythaemia
- To differentiate between appropriate secondary polycythaemia and inappropriate secondary polycythaemia
- In candidates for erythropoietin (EPO) replacement therapy.
- In those with chronic renal failure
- In patients who are receiving EPO replacement therapy and have a poor haematopoietic response
The erythropoietin test procedure is advised in those with elevated EPO symptoms like
- Itching
- Dizziness
- Joint pain
- Fatigue
- Breathlessness
- Tenderness in the palms of the hands or soles of the feet
- Sleep disturbance
The erythropoietin test procedure is advised in those with depleted EPO symptoms.
- Fatigue
- Shortness of breath
- Increased heart rate
- Dizziness
- Weakness
- Lightheadedness while changing positions
- Headaches
- Pale skin
So those who are suffering from the above symptoms and diseases should check for erythropoietin values. The erythropoietin test results might show abnormal levels in people living in high altitudes and in athletes.
Ranges
The normal range of erythropoietin levels is
Males | 5.8 - 9.9 IU/L |
Females | 6 - 10.6 IU/L |
What causes erythropoietin deficiency?
The causes of erythropoietin deficiency are
- Kidney tumour
- Renal failure
- Polycythaemia vera
- Rheumatoid arthritis
- HIV
- Carcinoma
- Ulcerative colitis
- Sickle cell anaemia
What foods contain erythropoietin?
The food that increases erythropoietin secretion are
- Red meat, such as beef.
- Organ meat, such as kidneys and liver.
- Dark, leafy, green vegetables, spinach and kale.
- Dried fruits, prunes and raisins.
- Beans, Legumes and egg yolks.
Test Result Interpretation
Increased or decreased levels of erythropoietin are responsible for various blood disorders.
- Decreased values in erythropoietin results with anaemia indicate renal dysfunction.
- Increased values in erythropoietin test results with anaemia indicate bone marrow dysfunction.
- Increased erythropoietin levels with anaemia could be due to iron or vitamin deficiency.
- Increased erythropoietin test chart values with an increase in RBCs indicate kidneys producing too much erythropoietin.
- Erythropoietin within normal range with an increase in red blood cells indicates primary polycythaemia.
Decreased level of erythropoietin :
- Chronic kidney failure
In chronic renal failure, kidneys can't produce enough EPO. The red blood cell count will diminish and anaemia will occur if your EPO levels are low. Anaemia affects the majority of persons with kidney illness. Anaemia can develop early in renal diseases and worsen as the kidneys fail to produce EPO.
Increased erythropoietin levels indicative of
- Polycythaemia
Polycythemia vera is a form of blood cancer. It causes the bone marrow to produce an excessive amount of red blood cells. These extra cells thicken the blood, delaying its flow and increasing the risk of blood clots.
In polycythemia vera and congenital/familial primary polycythemias, EPO levels are usually low to low-normal. In secondary physiologic or non-physiologic polycythemias, EPO levels are usually normal or elevated.
- Kidney tumour
According to one study, renal cell carcinoma cells create an inactive form of EPO, this could explain why renal cell carcinoma patients have high EPO levels.
- Abuse in Athletes
Some athletes abuse the blood system to improve their athletic performance. The athletes boost their red cell count to enhance their performance. This is harmful as it can lead to fatal complications.
Some other diseases where erythropoietin values are low are
- Rheumatoid arthritis
- AIDS
- Cancer
- Ulcerative colitis
- Sickle cell disease
- Premature neonates.
Erythropoietin test results alone cannot discriminate between primary and secondary polycythaemia. In some patients with primary polycythaemia, erythropoietin result chart values are within the normal range. Erythropoietin values in the test report may be higher in people who live at high altitudes than in people who live at lower altitudes.
Sample Type
The erythropoietin test procedure needs a blood sample. For the erythropoietin test procedure, overnight fasting is essential. The erythropoietin test procedure is simple.
Test Preparation
The erythropoietin test is a blood test that requires fasting. Before the test, the patient is requested to fast for 8-10 hours (overnight). Sometimes, you may also be asked to lie down quietly for 20-30 minutes before the test. A routine blood sample is required for the test.
But before the testing, make sure to inform the doctor about ongoing medications.
Make sure to follow the doctor's advice before taking the test. The doctor will provide instructions based on the medical situation.
What are the parameters included in the test?
The erythropoietin test values give an idea about the
- Decrease in the level of erythropoietin in the blood
- Increase in the erythropoietin levels in the blood
How frequently should you take this test?
The frequency of erythropoietin tests depends upon the doctor's advice and on the underlying disease. The erythropoietin test reports are repeated after three months of treatment to monitor the prognosis.
Erythropoietin test results are repeated for 3-4 months in bone marrow disorders to assure healing. The erythropoietin test reports are repeated annually in people with kidney diseases and blood disorders to keep track of health. Erythropoietin test reports don't need repetition if EPO values were within the normal range.
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Frequently Asked Questions
What triggers erythropoietin release?
Erythropoietin-producing kidney cells are specialised and sensitive to low oxygen levels in the blood. When the oxygen level in the kidney is low, these cells release erythropoietin. Lack of oxygen in the blood triggers erythropoietin release.
How is erythropoietin deficiency treated?
Injections can help restore erythropoietin chart values. It can take weeks for a person to observe a reduction in their symptoms. ESA injections may also be used to treat anaemia caused by other illnesses, such as bone marrow disorders.
How do I get erythropoietin?
The kidneys and liver produce erythropoietin naturally. Erythropoietin can be naturally induced by food like meat, egg, green vegetables, dry fruits, legumes and beans. In those with erythropoietin deficiency, erythropoietin injections can fill this deficiency.
How quickly does erythropoietin work?
It takes time for erythropoietin medication and injections to work on the body. It takes 1 to 2 months to overcome the deficiency.