Anyone who believes they have been exposed to high levels of lead should be tested for lead poisoning, even if they have no visible symptoms. Lead poisoning testing is usually done initially with a finger-prick test, and if this shows up as positive, it is usually followed-up by taking a sample of blood and sending it to a laboratory for analysis. Any value above 10?g/dL may be considered a health risk, as even this small amount may lead to brain damage in children. Children under 2 years of age would normally have lead poisoning testing done routinely as part of their well-child visits. If the tests come back positive then parents need to think about whether the exposure has occurred at home and take steps to remove the problem. X-rays may also be taken to check for ingested items containing lead.