What is the normal level of bilirubin?

What is bilirubin? This is probably a question that many people are concerned about. Bilirubin is an important indicator of our body and it should be paid attention to during physical examinations. So do you know what the normal range of bilirubin is? Let us understand what is the normal range of bilirubin.

1. What is bilirubin

It is the main metabolite of iron porphyrin compounds in the body. It is highly toxic and can cause irreversible damage to the brain and nervous system. It also has antioxidant effects and can inhibit the oxidation of linoleic acid and phospholipids. Bilirubin is an important basis for judging clinical jaundice and an important indicator of liver function.

2. Bilirubin is an important indicator of liver function

Normal bilirubin value

The normal range of total bilirubin is 1.71-17.1 μmol/L (1-10 mg/L).

The normal range of direct bilirubin is 0-3.4 μmol/L (1-4 mg/L).

The normal range of indirect bilirubin is 1.7-13.7 μmol/L.

The normal value of bilirubin in newborns is: total bilirubin is 3.4-17.1 μmol/l, direct bilirubin is 0-6.8 μmol/l, and indirect bilirubin is 1.7-10.2 μmol/l.

Bilirubin is a waste product in the body, but if the serum bilirubin is too high, but abnormal liver lesions or bile duct obstruction and other information are found, the level of serum bilirubin level represents the severity of the abnormality.

3. Introduction to normal values ​​of total bilirubin

Generally speaking, jaundice less than 34μmol/L is difficult to detect by visual examination and is called latent jaundice; 34-170μmol/L is mild jaundice; 170-340μmol/L is moderate jaundice; >340μmol/L is severe jaundice. Complete obstructive jaundice is 340-510 μmol/L; incomplete obstruction is 170-265 μmol/L; hepatocellular jaundice is 17-200 μmol/L; hemolytic jaundice is <85 μmol/L.

What is the normal value of total bilirubin?

The normal reference value of total bilirubin is: 3.42～20μmol/L.

If the total bilirubin level is elevated, it indicates that the liver is damaged. There is a certain correlation between the degree of increase in total bilirubin and the severity of jaundice. Generally speaking, the greater the increase in total bilirubin, the more severe the jaundice. If the increase in serum total bilirubin and indirect serum total bilirubin is mainly hemolytic jaundice, if the increase in serum total bilirubin and direct bilirubin is mainly obstructive jaundice, and if the increase in serum total bilirubin, direct bilirubin and indirect bilirubin are all increased, it is hepatocellular jaundice, such as viral hepatitis.

Therefore, when you find that your total bilirubin value is high, you must go to a regular professional hospital for comprehensive examination and treatment in time. If the total bilirubin is elevated due to various viral hepatitis, it is best for the patient to receive antiviral treatment.