The rate and causes of low blood urea

After the breakdown of proteins, a series of nitrogen-containing compounds are formed, such as creatinine, ammonia, uric acid, etc. Some of them, for example, ammonia are toxic to tissues, so the body tends rather to convert them into other, more benign compounds. This process takes place in the liver, as a result of which ammonia is removed from the blood and urea is formed. In short, what is urea is the last product of protein decomposition.

Table of contents:
  • Blood urea standard
  • When
  • is lowered Blood test for urea and creatinine
  • What is the difference between urea and uric acid
  • How to reduce blood urea?

Why do you need this analysis?

Urea is excreted from the body through the kidneys, and is produced in the liver. That is why the blood test for urea allows us to conclude about the functionality of these organs. Most often, an analysis is prescribed if there are suspicions about a malfunction of the kidneys. Another process that causes deviation of urea from th

e norm is the breakdown of proteins found in the muscles. Of course, other factors may also affect urea levels in the blood, we'll talk about them below.

to contents ↑

Blood urea norm

In women, men and children, the optimal indicators for the analysis of urea differ. With age increases the permissible concentration of urea in the blood. This indicator is most often measured in mmol / l, below we give its reference values ​​in these units of measurement.

So, for newborns the norm is 1.3-5.2.

Up to 14 years, children normally have 1.7-6.4.

The urea norm in the blood of women under 59 years old rises to 2.3-6.7, for men of the same age, 3.6-7.3.

For people over 60 years of age, blood urea levels of 2.6-7.7 are considered acceptable.

The higher concentrations of urea in the blood of men are associated, in particular, with greater physical exertion experienced by the stronger sex of humanity, as well as the fact that they have a greater amount of protein in the diet than women.

to contents ↑


is lowered For a doctor, both blood urea and low blood are of diagnostic value. And that, and another option may indicate problems in the body.

Since urea appears in the liver, its deficiency in the blood compared to the norm may be associated with impaired liver function. At the same time, a lack of proteins and amino acids in the body( caused by a disease or a natural process) also causes a decrease in urea.

If urea in the blood is reduced, the causes should be sought in one of the following processes:

  • cirrhosis and liver tumors;
  • hepatitis;
  • intoxication of the body with phosphorus, arsenic;
  • protein-free or vegetarian diet;
  • hepatic coma;
  • fatty hepatosis;
  • chronic pancreatitis;
  • violation of water-salt metabolism;
  • thyroid problems;
  • pathological violation of the digestion of food by the intestinal tract;
  • renal failure;
  • recovery period after bowel surgery.

However, this is not always the result of the analysis indicates a disease. Urea is lowered in blood during pregnancy and with intensive growth in children in adolescence. This is due to the fact that protein in large quantities is spent on the construction of new tissues and does not have time to decompose.

Some treatments, such as taking insulin, anabolic steroids, growth hormone, testosterone, also cause a decrease in blood urea.

to contents ↑

Blood analysis for urea and creatinine

Both of these compounds are the results of the breakdown of proteins, both of which leave the body with urine. Both that and other indicator react to protein food or diseases of a liver and kidneys. However, there are differences in the analyzes of these substances. For reasons for increasing creatinine, see http: // povyishennyiy-kreatinin-v-krovi.html

Urea changes in the blood faster, while creatinine accumulation may take some time. So if the patient has a high level of urea in the blood, and creatinine remains normal, this may indicate, for example, that he had eaten protein food the day before going to the clinic.

At the same time, it is the creatinine analysis that allows you to observe the real dynamics of recovery.

It can be said that urea is more important for relatively healthy people due to its instantaneous change, and for people with diseases it is necessary to donate blood for creatinine regularly in order to track the effectiveness of treatment.

to contents ↑

What is the difference between urea and uric acid

Despite the fact that some features and even the names of these two substances are similar, there are some differences between them:

  • Uric acid( hereinafter MK) is the final product of purines, together withas a result of this reaction, ATP is released - the main source of energy in the body. Whereas the main function of urea( M) is to prevent the detrimental effect of excess ammonia on tissue.
  • M dissolves in water, MK - with difficulty.
  • MK can appear in any part of the body where a cell dies. M is formed in the liver.
  • Urea is practically harmless to the body. Uric acid, or rather its salts are able to adversely affect the joints and tissues. Read more at http: // kak-vyivesti-mochevuyu-kislotu.html

However, under certain conditions, such as prolonged fasting or a strict diet, there is a deviation of both these indicators.

Therefore, in order to reliably find out what urea in the blood shows in this particular case, it is necessary to look at other indicators of the analysis, as well as to pay attention to the associated symptoms.

to contents ↑

How to reduce blood urea?

If the level of urea in the blood rises above the critical norm, there is a need to somehow lower it. But before taking any action, it is important to make sure that this deviation is not caused by a serious disease that requires a special solution.

Before reducing the level of urea in the blood, it is best to consult a doctor in order not to earn yourself additional complications. If your actions are agreed with a medical professional, you can proceed.

  1. Review your ration.

Since proteins are the raw material for obtaining urea in the body, protein foods should be temporarily abandoned. Prohibited will be mushrooms, meat, fish, canned based on them, eggplant, fatty dairy products, etc.

And it’s better to give preference to vegetables, fruits, pure water, natural juices, cereals, low-fat dairy products. Consider that at the time of urea reduction, you have come to a vegetarian diet. Of course, sometimes you can pamper yourself a little with meat, but no more than one small meal per day, better less often.

  1. Folk Tips

With elevated urea, people recommend drinking half or a glass of birch leaves twice a day or a dessert spoon of nettle juice three times a day.

  1. Blood Purification

Modern medicine can offer you a variety of procedures aimed at cleansing, filtering and blood transfusion.

  1. Medications

Some medications reduce urea to the desired level in a fairly short time. This sulfinpirazon, benzobromarone, allopurinol. They should be consumed in the dosage prescribed by the doctor.

God bless you!