LIBBY LIBRARY · TOPIC
heavy metals
2 articles in this field-note collection.
Lead blood test: normal levels, sources, and when to act
A blood lead test shows recent lead exposure. Here are the CDC and workplace thresholds, the common sources, what low levels are linked to, and when to retest.
Mercury blood test: normal levels, fish, and high results
Blood mercury mostly tracks the fish you ate in recent weeks; urine tracks vapor and inorganic mercury. Typical U.S. levels, action levels, and when to worry.