How to test the level of lead in the blood and how much the blood lead level is in the normal range

International criteria for the diagnosis of blood lead: 100 micrograms or more than 100 micrograms for lead poisoning.

Normal blood lead level: 0--99 micrograms liter (L).

100-199 micrograms l for lead poisoning.

200--249 micrograms l for mild poisoning.

250--449 micrograms for moderate poisoning.

Poisoning is severe if it is equal to or higher than 450 micrograms.

The best indicator of a child's exposure to lead within 1-3 months is whole blood lead levels, or blood lead for short. Blood lead is easy to measure and has a good correlation with other indicators, and there is a standard method, which has been used by hospitals to better reflect the lead load in children. Of the several methods used to measure blood lead levels, blood drawn from a vein is the most accurate way to check blood levels.

At present, the diagnosis and grading of lead poisoning in children is generally recognized according to the blood lead level, which is divided into five grades: blood lead less than 99 micrograms (milligrams) liters, which is relatively safe;

Grade: 100-199 μg L of blood lead, mild lead poisoning, affected heme metabolism, decreased nerve conduction velocity;

Grade: 200-499 micrograms of blood lead, moderate lead poisoning, affected iron, zinc and calcium metabolism, calcium deficiency, zinc deficiency, hemoglobin synthesis disorders, may have symptoms such as low immunity, learning difficulties, poor concentration, decreased IQ level or physical growth retardation;

Grade: 500-699 micrograms of blood lead, severe lead poisoning, can appear personality changes, irritability, hyperactivity, aggressive behavior, movement disorders, vision and hearing loss, unexplained abdominal pain, anemia and arrhythmia and other poisoning symptoms;

Grade: 700 mcg liters of blood lead, which can lead to kidney damage, lead encephalopathy, and even death.

If the amount of lead in the body is slightly higher, attention should be paid to the intake of divalent ions such as calcium, iron and zinc, so as to reduce the accumulation of lead. If the blood lead is less than 45ug di, non-drug lead removal should be used, including frequent hand washing, regular household cleaning, and eating less lead-containing food. The second is to use some health care products with lead removal function, such as sea cucumber, kelp, seaweed, black dates, green onions, oatmeal, oolong tea, prickly pear, kiwifruit, etc., and dietary fiber and other foods also have the effect of lead removal.

Hello! Blood lead refers to the amount of lead in the blood, which exceeds the normal value of blood lead content, and if it is too high, it indicates that lead poisoning has occurred. It can cause a series of abnormal manifestations of the body's nervous system, blood system, and digestive system. Impact: Where does lead come from.

The normal functioning of the human body.

Lead is a neurotoxic heavy metal element Zechang, which has no physiological function in the human body, and its ideal blood lead concentration is zero. However, due to the prevalence of lead in the environment, there is a certain amount of lead in the vast majority of human bodies, and the amount of lead in the body above a certain level will cause damage to health. Children are particularly sensitive to lead toxicity due to metabolic and developmental characteristics.

Studies have confirmed that blood lead levels of around 10 μg dl ( are not sufficient to produce specific clinical manifestations, but they can adversely affect children's mental development, physical growth, learning ability, and hearing.