Why do doctors give blood tests for lead poisoning?

Lead is toxic: Lead is in our environment and many children are exposed to it in many different ways. Lead can hurt your brain , it can cause anemia and many other effects. So it is good to screen children early in life . If it is high it can be remove from the body by special medicines.

That's how found: Lead is a heavy metal that was used as an additive in paints & gasoline in the past. It is also found in many industrial settings. Trace amounts are usually not a problem but it can be dangerous. It interferes with the formation of blood , which is one basis for blood tests. It can also attack nerve cells and cause brain injury. The simplest way to screen for exposure is a blood test.