International diagnostic standard of blood lead: equal to or greater than 100 μ g/L, it is lead poisoning.

Normal blood lead level: 0-99 μ g/L (L).

100- 199 μ g/liter lead poisoning.

200-249 μ g/L mild poisoning.

250-449 μ g/is moderately poisoned.

More than 450 μ g/L is severe poisoning.

Blood lead standard for children

High lead and lead poisoning in children should be diagnosed according to the venous blood lead level in children.

High lead level: the venous blood lead level was100 ~199 ug/l for two consecutive times;

Lead poisoning: the venous blood lead level is equal to or higher than 200 ug/L for two consecutive times; According to the blood lead level, it can be divided into mild, moderate and severe lead poisoning.

Mild lead poisoning: blood lead level is 200 ~ 249 ug/L;

Moderate lead poisoning: blood lead level is 250 ~ 449 ug/L;

Severe lead poisoning: the blood lead level is equal to or higher than 450 ug/L;

Extended data

Lead can pass through the placental barrier. If the blood lead content of pregnant women exceeds the standard, the fetus will be polluted by maternal lead. When a child is born, his basic blood lead content will be greater than zero, and then his overall development level will be lower than the normal level with zero blood lead content. During postpartum lactation, the amount of bone lead released by pregnant women is greater than that before delivery, and blood lead can continue to enter the baby through milk.

Excessive blood lead in early years will not only delay children's physical development, but also affect their reading ability, orientation ability, listening ability and psychological and behavioral development related to learning ability in the future.

Women should check their blood lead levels in the first three months of pregnancy. Do not exceed the standard to prevent exceeding the standard. Those who have exceeded the standard should be treated with drugs in time, and children should be born after blood lead is restored to a safe level. However, pregnant women and lactating women should not use drugs to discharge lead. Therefore, it is necessary to strengthen prevention and stay away from lead pollution sources (such as automobile exhaust and lead-containing decorative coatings). ) and avoid lead-containing diets (such as popcorn and pickles as usual). And pregnant women had better not wear makeup.

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