How can i tell if my baby has too much mercury in his system?

Complicated: This is a very complex question. Mercury sources include food (certain fish), biologicals (thimerosal), industrial. Blood tests only measure acute exposure, not chronic, which is typically the concern. Other tests - urine, hair, stool - are very difficult to interpret and have strengths/weaknesses depending on the clinical situation. Consult a local pediatric environmental health center.

Check mercury level: Mercury from industrial plants goes into the air and comes down with rainfall, which eventually ends up in lakes and oceans (oxymetazoline). The mercury moves up the food chain, getting into the fish we eat. A parent who is worried about a baby having high mercury levels can ask the doctor to see if the baby is at risk for elevated mercury and to see if a blood test can be done.