RDW In A Blood Test - Explanation, Reasons For Increasing And Decreasing SD / CV

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RDW In A Blood Test - Explanation, Reasons For Increasing And Decreasing SD / CV
RDW In A Blood Test - Explanation, Reasons For Increasing And Decreasing SD / CV

Video: RDW In A Blood Test - Explanation, Reasons For Increasing And Decreasing SD / CV

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Video: Red Cell Distribution Width (RDW); What Does This Lab Test REALLY Mean? 2023, February

Last updated 26 July 2017 at 07:39 PM

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At any stage of life, when checking the internal state of a person or simply for the prevention of health, a general blood test is performed.

It is done according to the doctor's prescription, but does not pose any threat to health, but on the contrary, the research is beneficial, gives a result and can prevent the development of the disease. When any unpleasant symptoms and assumptions about the disease appear, a person turns to a doctor and not a single study is complete without analyzing the blood flow.

The human body contains a huge number of indicators that are responsible for the human condition and deviations in indicators lead to unstable work and a change in human well-being.

There are a lot of reasons for changing the level of indicators and sometimes it is impossible to immediately determine the cause, if one of the indicators is lowered, the person feels the change and goes to the hospital.


  • 1 When should you get tested?
  • 2 Main indices of blood flow
  • 3 Equally important components of blood flow
  • 4 Decoding blood test
  • 5 Changes in indicators - anxiety of the body

    5.1 Similar articles

When should you get tested?


As a result, a blood test allows you to obtain a set of indicators that can influence the appearance of a particular disease, even in its rudiments. There is a difference between blood flow from a finger or from a vein, but here the doctor himself determines which analysis needs to be performed.

It is recommended to monitor the results of the analysis approximately every six months in order to notice a probable disease at the stage of its development and not to start it. Like all tests, it is advisable to donate blood in the morning and on an empty stomach, so that food intake could not affect the change in indicators, since an enzyme that changes the composition of blood flow may be included in the product.

It is impossible to store the collected blood and it is necessary to analyze it within 5 hours, while the blood cells are still in the mode of existence and are active.

Major blood flow indices


In addition to the main indicators, there are additional, but no less important in the structure of blood flow:

  1. Hematocrit is present in the blood and shows the ratio of blood cells to the total composition, that is, to the volume of plasma. The level of hematocrit in the blood demonstrates its density, which is also very important. This level is special for each gender and age. If the hematocrit index is lowered, then this indicates the development of anemia, which means that the level of fluid in the body exceeds normal.
  2. Platelets are small cells in the bloodstream that are designed to block holes. In case of minor injuries, cuts of blood vessels or capillaries, platelets ensure the safety of blood, regulate its flow and stimulate coagulation. That is, the loss of blood will not occur indefinitely, but will stop, washing the wound. If the level of platelets in the bloodstream is low, this indicates damage to the liver or thyroid gland, and a severe form of influenza is possible. With a high platelet count, the blood flow is too thick and this strains the heart muscle.

Decoding a blood test


A blood test is a very broad concept, deciphering which requires a lot of knowledge and effort. A list of diseases that can be identified in the early stages using rdw in a blood test is considered.

Erythrocytes play a major role in the composition of the blood flow, but their width and distribution are uneven.

Rdw in a blood test is an index showing the frequency of distribution of blood cells throughout the blood volume. That is, directly in the blood rdw demonstrates the variety of volumes in a particular blood sample.

The rdw cv index is calculated by analyzing blood and serves as a coefficient of heterogeneity of the size of red blood cells. Erythrocytes can be of different sizes, and how much they differ from each other, this index will show.

A blood test for rdw can occur as directed by a doctor on an unplanned basis or at the request of the patient. The results of this analysis are used to identify various complex diseases.

Decoding rdw analysis is combined with the MCV indicator. There are also cases when these MCV indices are slightly overestimated by the norm, and the RDW indicator shows good results, this indicates liver diseases.

Changes in indicators - anxiety of the body

An analysis of blood flow is necessary for any deviation in the well-being of the body; when determining any disease, the doctor first of all prescribes to undergo tests and considers changes in the rates of indicators.

This indicates the development of diseases in the human body, the main of which is anemia.

The severity of such serious diseases is determined by the degree and to avoid recognition of the disease at a later stage, it is recommended to regularly take tests.

To get a referral, you just need to come to the doctor, this will be the key to a healthy body and a person's peace of mind.

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