What is the normal value of blood lipids

Blood lipids exist in everyone's blood, and because blood lipids are widely distributed throughout a person's body, they play an important role in promoting human metabolism. However, the patient's physical health condition can be effectively inferred through blood lipid value examination, because the blood lipids in human blood are mainly cholesterol and triglycerides. If cholesterol is too high, it will increase the risk of patients suffering from fatty liver and cirrhosis. So what is the range of normal people's blood lipids?

1. What is blood lipid?

Blood lipids are the general term for neutral fats (triglycerides and cholesterol) and lipids (phospholipids, glycolipids, sterols, steroids) in plasma, and are widely present in the human body. They are essential substances for the basic metabolism of living cells. Generally speaking, the main components of blood lipids are triglycerides and cholesterol. Triglycerides are involved in energy metabolism in the human body, while cholesterol is mainly used to synthesize cell membranes, steroid hormones and bile acids.

2. Normal range of blood lipids:

1. Plasma total cholesterol control standard. The ideal value should be <200 mg/dL; the critical value is 200-239 mg/dL; an excessively high value refers to plasma total cholesterol >240 mg/dL.

2. Plasma triglyceride control standards. The ideal value should be <200 mg/dL; the critical value is 200-239 mg/dL; an excessively high value refers to a plasma triglyceride level >240 mg/dL.

3. Low-density lipoprotein cholesterol control standards. Its ideal value should be <130mg/dL; the critical value is 130-159mg/dL; an excessively high value refers to low-density lipoprotein cholesterol >160mg/dL.

4. High-density lipoprotein cholesterol control standards. Its ideal value should be >50mg/dL; the critical value is 35-50mg/dL; and the danger value is <35mg/dL.

Normal blood lipid values ​​are as follows:

1. Total cholesterol (TC): below 200 ml/dl or around 3-5.2 mmol/L.

2. Triglyceride (TG): below 150 mg/dl or around 1.7 mmol/L.

3. Low-density lipoprotein (LDL-C): 120 mg/dl or below 3.12 mmol/L.

4. High-density lipoprotein (HDL-C): 40 mg/dl or above 1.04 mmol/L.

3. Clinical significance of blood lipids:

1. Total cholesterol (TC)

(1) Physiological changes: The level of blood pressure in women aged 40-50 years increases by 10%, in menopausal women by 10%, in chronic drinkers by 10%, in people with a diet rich in saturated fatty acids by 6%, and in smokers by 4%. The level of blood pressure can decrease by 20% during the luteal phase of menstruation, by 50% in newborns, and by 5% in vegetarians. The level of blood pressure in type B blood is 5% lower than that in type O blood.

(2) Pathological changes: Increased levels are seen in type II hyperlipoproteinemia, hypothyroidism, diabetes, pancreatitis, lipoid nephropathy, arsenic hepatitis, bile duct obstruction, arteriosclerosis, myocardial ischemia, etc.; decreased levels are seen in malnutrition, hyperthyroidism, cirrhosis, chronic toxic hepatitis, anemia, osteomalacia of the femoral head, thyroiditis, etc.

2. Serum triglyceride (TG or STG)

Increased: Triglycerides (TG) above 2.26 mmol/L are considered increased, and above 5.56 mmol/L are considered severe hypertriglyceridemia. It is common in atherosclerosis, obesity, diabetes, kidney disease, etc.

Decreased: seen in hyperthyroidism, adrenal cortex insufficiency, and liver parenchymal lesions.

3. Serum high-density lipoprotein subclasses - cholesterol (HDL2-C and HDL3-C)

Elevated serum high-density lipoprotein subclass 1 cholesterol (HDL2-C) is seen in arteriosclerosis, myocardial infarction, diabetes, stroke, etc.; decreased serum high-density lipoprotein subclass 1 cholesterol (HDL3-c) is seen in poor liver function.

4. Serum low-density lipoprotein cholesterol (LDL-C)

Elevated low-density lipoprotein cholesterol (LDL-C) is one of the risk factors for cardiovascular and cerebrovascular diseases. When total cholesterol (TC) is normal but the ratio of high-density lipoprotein cholesterol (HDL-C): low-density lipoprotein cholesterol is lower than 1:3.5, the incidence of cardiovascular and cerebrovascular diseases increases.