Testing for Lead Exposure

Who Should be Tested

Talk to your health care provider about whether your child needs to be tested for lead. Your health care provider may ask you questions to see if your child is at risk of lead exposure. The only way to know for sure if your child has been exposed to lead is to have their blood tested.  

If any of the following are true, your child could be at risk of lead exposure, and you should talk to your health care provider about a blood lead test. 

My child lives in, or regularly visits a home built before 1978 that:

My child has:

Someone does one of these things in my house:

Someone who lives in my house works at:

How Testing is Done

A health care provider will test your child's blood for lead. The test is simple. To find out how much lead is in a child's blood, a small amount of blood is taken from the child's arm or finger.

What the Test Results Mean

A blood lead test tells us how much lead is in someone’s blood. This is known as the blood lead level. Blood lead levels are reported in micrograms per deciliter or “µg/dL”. 

There is no known safe level of lead. The blood lead level will tell if your child has been exposed to lead in the last month.  

Washington State’s blood lead action level is 3.5 µg/dL. This level is based on the national blood lead reference value (BLRV), which identifies a blood lead level higher than over 97% of U.S. children under age 6.  

If your child has a blood lead level of 3.5 µg/dL or higher, you may be contacted by your child’s health care provider, Medicaid/Apple Health plan, and/or local public health agency for follow-up. 

Handout: 

Lead and Your Child (PDF)

Spanish: El plomo y la salud de su hijo (PDF)

If My Child Has Been Exposed to Lead

  • The best thing you can do is identify the source of lead and remove or reduce your child’s access to that source.  
  • If your child has a blood lead test result of 3.5 µg/dL or higher, your health care provider should schedule additional testing to confirm and monitor their blood lead level.  
  • You may receive a phone call, letter, or email from your local health department or Medicaid/Apple Health plan. They can help you identify possible sources of lead in your child’s environment.  
  • Unless your child’s blood lead level is 45 µg/dL and above, there is no medication for lead exposure.  
  • Feed your child a diet that will help protect them from lead. Lead absorption is increased when there is not enough iron or calcium in a child’s diet. Give your child healthy foods, high in calcium, iron and vitamin C, and low in fat. Remember to wash your child’s hands with soap and water often, especially before meals and after playing outside.

More Information

Lead in Washington State - Who is at risk, health effects, and how to prevent exposure.

Common Sources of Lead

Lead Publications

Lead Data - Washington Tracking Network