Why Would I Need This Test
A full blood count is a very common test used to screen for, help diagnose, and monitor a variety of conditions. It can be used as part of routine medical testing, or to examine specific issues such as:
- exposure to toxic substances
- monitoring response to treatment
There are many medical conditions that can affect the full blood count. Blood cells can also be affected by some medications and some vitamin or mineral deficiencies.
What Is An Mcv Blood Test
MCV stands for mean corpuscular volume. An MCV blood test measures the average size of your red blood cells.
Red blood cells carry oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and stay healthy. If your red blood cells are too small or too large, it could be a sign of a blood disorder such as anemia, a lack of certain vitamins, or other medical conditions.
Other names: CBC with differential
What Are Red Blood Cells
Blood transports a variety of materials between interior body cells and those that exchange substances with the external environment. In this way, blood helps maintain stable internal environmental conditions. Blood is composed of formed elements suspended in a fluid extracellular matrix called blood plasma. The formed elements include red blood cells, white blood cells, and cell fragments called platelets. Most blood cells form in red marrow within the hollow parts of certain long bones.
Most blood samples are roughly 37% to 49% red blood cells by volume adult females is 3846% and for adult males, it is 4054% . This percentage is called the hematocrit. The white blood cells and platelets account for less than 1% of blood volume. The remaining blood sample, about 55%, is the plasma, a clear, straw-colored liquid. Blood plasma is a complex mixture of water, gases, amino acids, proteins, carbohydrates, lipids, vitamins, hormones, electrolytes, and cellular wastes.
Blood volume varies with body size, percent adipose tissue, and changes in fluid and electrolyte concentrations. An average-size adult has a blood volume of about 5 liters , 45 liters in a female and 56 liters in a male.
Each red blood cell is about one-third hemoglobin by volume. This protein imparts the color of blood. When hemoglobin binds oxygen, the resulting oxyhemoglobin is bright red, and when oxygen is released, the resulting deoxyhemoglobin is darker.
Figure 2. Blood composition
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What To Do If Mcv Levels Are Low Or High
Usually, if blood tests show an abnormal reading where MCV levels are either too high or too low, doctors will investigate the cause further. Depending on the reason for the abnormal MCV levels, they will recommend various ways to treat the condition.
In many cases, there are effective natural remedies that can help to address the underlying health issues that are causing a change in your RBC mean corpuscular volume.
What Does A Low Or High Mchc Mean
There is no specific normal value, yet the most widely used standard of MCHC is in the range of 32-36 grams/deciliter in adults or can be also expressed in percentage within 28-36%. The standard value is set to be in range because different laboratories use different machinery or technique in measuring MCHC which brings different results of the blood tests. Thus every laboratory had their considerable normal range in the reported result document.
Low Mean Corpuscular Hemoglobin Concentration means there is less hemoglobin in the red blood cell not considering the size of the cell. This case called as Hypochromia or Hypochromic anemia means the red blood cells do not have enough hemoglobin to function properly. It may be caused by prolonged blood loss, iron deficiency, internal bleeding, any gastrointestinal tract tumors or a specific condition. People have hypochromic anemia experiencing fatigue and short breath most of the time. MCHC can consider low if the level of blood test result is below 28% or 32 grams/deciliter.
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What Is Mcv Blood Test And What Is It Used For
Checking the average volume of your red blood cells in a sample is an important way to diagnose various conditions that could impact your health. According to the American Association for Clinical Chemistry, MCV indices that are low or high can indicate various types of anemias or vitamin deficiencies.1
If the MCV blood test readings are abnormal, doctors will also take into account the MCHC blood test readings that can help to pinpoint the underlying cause.
What Does It Mean If Mcv Blood Test Is Low
If your MCV blood test is low, with the number being under 80 fL, that means your red blood cells are smaller than they should be. This condition is called microcytic anemia, and this is usually caused by an iron deficiency that is preventing your body from making enough hemoglobin. This is a compound that gives blood its red color, and helps move oxygen around your body.
Its interesting to note that microcytic and microcytic anemia can hand the same symptoms, including shortness of breath, fatigue, dizziness and pale skin. So whether your red blood cells are too big or too small, you might experience the same signs. Thats why the test is so important.
There are several types of microcytic anemia, all with varying degrees of hemoglobin present in the blood. But the most common is hypochromic, meaning there simply isnt enough hemoglobin being produced.
Once a proper diagnosis is made, and the cause is determined to be an iron deficiency your doctor will typically prescribe iron supplements, along with Vitamin C to help with the absorption. As with high MCV blood test results, low results can also be corrected with proper treatment. A follow up test will determine if the iron supplementation was successful.
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What Is The Mcv In The Blood Test
Mean Corpuscular Volume is the expanded form of MCV. In your blood, the blood cells are categorized into three main categories, they are
- Red blood cells,
- White blood cells, and
This MCV blood test shows the average size of your RBCs, red blood cells, also known as erythrocytes. Red blood cells are the prime transporting material for sending oxygen from your lungs to every cell in your body. Your body requires oxygen to function properly without any health issues and stay healthy. If your red blood cells are not in their original form, being too small or too large, they might be a sign of a blood disorder such as anemia, a vitamin deficiency, or other medical condition.
MCV test closely mirrors the Mean Corpuscular Hemoglobin . Since MCV readings and MCH readings offer similar information, physicians generally rely on the MCV values and dismiss the MCH on your Complete Blood Count blood test results. .
What Does Mcv Mean In A Blood Test
MCV is the abbreviated form of Mean Corpuscular Volume , which is an important component of the common blood test called Full Blood Count . Mean corpuscular volume is a measure of the average volume of red blood corpuscles in a persons body. Thus, it gives an idea about the average size of each red blood cell inside someones body.
An abnormally high value of MCV means that the red blood cells are bigger in size than usual, and an abnormally low value of MCV means that the red blood cells are smaller in size than usual. MCV is usually interpreted based on a persons clinical condition , and along with other measures in a full blood count such as haemoglobin level , mean corpuscular haemoglobin , and mean corpuscular haemoglobin concentration . It may also be interpreted along with a blood picture. MCV is mostly useful in differentiating the types of anaemia, and in finding out the cause of anaemia.
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What Is A Normal Mcv In Children
Mean corpuscular volume is a measurement of the average size of red blood cells . MCV is part of complete blood counta routine screening test that analyzes the other two blood components, white blood cells and platelets.
MCV is an indicator of reduced red blood cell circulation in the body, as seen in anemia and vitamin B12 and folic acid deficiencies.
Normal MCV in adults ranges from 80-100 fL.
Normal pediatric ranges are shown in the table below.
Table: Normal MCV ranges for children by age group
Newborn Testing For Sickle Cell Anemia And G6pd Deficiency
All States mandate screening for sickle cell anemia as part of their newborn screening programs. Some States also mandate screening for G6PD deficiency. These inherited types of hemolytic anemia can be detected with routine blood tests.
Diagnosing these conditions as early as possible is important so that children can get proper treatment.
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What Does An Abnormal Mcv Level Mean
It is essential to remember that the level of red blood cells should be standard and just right to perform its function correctly. MCV levels would also let you determine if the patient is anemic or not. But aside from that, it would also let you interpret the reason for the abnormal red blood cells count and how to proceed with the treatment.
There are two abnormalities seen in an MCV blood test. The count could be either too high or too low. A drop on the red blood cell volume is often associated to microcytosis. A low MCV would often result to tiredness and fatigue. These results are because the amount of oxygen delivered to the cells are too low as well. The opposite of this is macrocytosis. When too much red blood cells are generated, they are more prone to break on the tiny capillaries and might cause serious damage.
See another article: What does high RDW mean.
MCV Normal Range
The typical MCV blood test range is measured in femtoliter and has a range of 80 -100 fL. The following table shows the normal range of MCV count:
|77 to 91 fL|
High MCV Means Causes:
A high MCV may be caused by different things or conditions. Knowing these are essential to avoid developing large red blood cells count.
- Less Vitamin B12 intake
- Deficiency in folic acid
- Too much alcohol intake
If a person consumes more alcohol than what is considered acceptable, would damage the storage for the vitamin b12. This would cause the high MCV.
Learn more about High MCH
Low MCV Means Causes:
Combination Of Mcv And Mchc
The combination of MCV and MCHC can help narrow down the possible diagnoses. Cells with a low MCHC are called hypochromic, which means light-colored.
The table below shows which conditions are associated with different combinations of MCV and MCHC measurements.
|MCV and MCHC in Anemia|
|Cold agglutinin disease|
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What Does A Low Mcv Test Result Mean
Typical low readings are around?60-70 FL.
Just like a low reading, theres a variety of reasons why you result might be high. The most common cause being anemia.
In this case, it is Microcytic Anemia or Microcytosis. This is a condition that involves an abnormally low amount of hemoglobin in the blood .?If you think youre low readings might be due to anemia, you might want to?get tested for anemia.?Microcytosis is more dangerous than Macrocytosis. It is definitely something you should have checked out.
Low results can also be due to iron deficiency, inadequate dietary intake, gastrointestinal blood loss or?menstruation,?allergies, chronic disease, lead poisoning and kidney failure.
For more in-depth information consult with your doctor.
How Is A Cbc Done
If the CBC is the only blood test youâre having, you can eat and drink like you usually would.
Your part of the test is simple and takes just a few minutes. A nurse or lab tech will take a sample of blood by putting a needle into a vein in your arm. Afterward, you can leave and get back to your routine. Theyâll send the blood to a lab for review.
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What Is A Complete Blood Count
- Check for anemia, a condition that causes you to have fewer red blood cells than usual
- Find out if you have another health issue or to explain symptoms like weakness, fever, bruising, or feeling tired
- Keep an eye on a blood condition
- See how medications, medical conditions, or treatments like chemotherapy are affecting your blood
Mcv Blood Test Normal Range
Normal range of MCV is 80fl â 100fl. This range is applicable for both Men and Women. When the MCV level is below 80 fl, then it is Microcytic Anemia. If MCV level is more than 100 fl, then it is Macrocytic Anemia.
It is always good to have a normal MCV. Because if your MCV is high or low then there is abnormality of red blood cell size. So this is an indication that your body has some known or unknown health issues that needs medical attention.
But when anemia is present and MCV level is normal, then it is called Normocytic Anemia. It suggests either anemia is due to acute blood loss, or the anemia is due to chronic diseases.
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What Is Mcv In A Blood Test Report
MCV calculated in the blood test report stands for the mean corpuscular volume. The MCV is a laboratory value that refers to the average volume and size of the red blood cells . The normal value of MCV ranges from 80fL to 100fL. The value of MCV helps in determining the etiology of anemia. According to the value of MCV, the etiology of anemia can be of the following types:
- Microcytic anemia: The value of MCV is less than 80fL. In such a case, the red blood cells are smaller than normal and much smaller than the leukocytes.
- Macrocytic anemia: The value of MCV is greater than 100fL. In such a case, the average volume of red blood cells is larger than normal.
- Normocytic anemia: In this type of anemia, the value of MCV lies within the normal range, but the hemoglobin levels are low.
The level of MCV in the blood is measured by multiplying the percentage of hematocrit by 10 and dividing the resultant by the observed erythrocyte count.
When You Should Contact The Doctor About Your Mcv Levels
If you always feel cold or tired, it is a possible cause of anaemia. Ensure you contact your doctor if you experience symptoms of anaemia. The doctor may ask about your family medical history, as conditions like Crohns disease and thalassemia which cause anaemia run in families.
You can visit Private Blood Tests London for your MCV level test and any blood test London. Call us today on for an appointment for your blood test or to ask any blood test-related questions like.
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What Is It Used For
An MCV blood test is often part of a complete blood count . A CBC is a common blood test that measures many parts of your blood, including red blood cells. It is used to check your general health.
An MCV test may also be used with other tests to help diagnose or monitor certain blood disorders, including anemia. There are many types of anemia. An MCV test can help diagnose which type of anemia you have.
Avoid Habits That Cause Kidney Damage
You should also avoid habits that can damage your kidneys if low MCV levels show up in a blood test. One of the best things you can do to keep your kidneys healthy is to drink plenty of fluids every day. However, stopping smoking, getting enough vitamins and minerals, and getting proper regular exercise are all ways to keep your kidney working well.
Making positive lifestyle changes can help prevent the onset of kidney disease. For more ways on how to promote kidney health naturally, please read my article on natural ways to strengthen your kidneys.
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Autoimmune And Dietary Factors
The following may result in vitamin B12 deficiency.
Vegan diets do not include animal meals that contain natural forms of vitamin B12. Vegans and people with vitamin B12 deficiency can take supplements or vitamin B12-fortified foods.
- Autoimmune gastritis
This inflammatory condition affects the stomach, particularly the parietal cells that produce intrinsic factors. If these intrinsic factors are absent, vitamin B12 cannot enter the bloodstream through the distal small intestine. Iron infusions and vitamin B12 injections can treat this deficiency.
Low Mcv: Microcytic Anemia
On the opposite side, we find microcytosis or microcytic anemia, or what is the same, low MCV. This means that the average size of the red blood cells is smaller than would be desirable.
Microcytic anemia or microcytosis occurs when the number of VCM in the Blood is lower than usual. This means that the average volume of red blood cells is less than what is considered healthy. The causes that can cause it are multiple, but one should be highlighted due to its dangerousness, known medically as subclinical bleeding. Usually, when there is a loss of blood, the person is aware of it, for example, in the case of injuries, wounds, or surgical operations. However, in the case of subclinical bleeding, it occurs slowly, for instance, through ulcers, heavy menstruation, or minor internal bleeding. Usually, these disorders in which Blood is lost internally, such as at some point in the digestive tract, can be dangerous if proper treatment is not carried out.
If, after various medical tests, the doctor determines that there is no bleeding, other possible causes of microcytic anemia or low MCV are:
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