Lead levels abnormal

Desperately wondering if anyone has gone through something similar with their one year old. My daughter had her one year check up where they pricked her finger and it was determined her iron was really low. This was last week, and we’ve been doing iron supplements. Seems to be working as her appetite has increased. Well today her doctor called saying her lead test is abnormal and to go to the hospital to have them draw an actual blood draw to recheck everything. We do not have an update on her lead test, but her doctor called saying her white blood cell count is low and we need to see a hematologist. Her doctor asked if she had been sick or recently fought off a viral infection, but she hasn’t. I don’t know what to think but I’m so scared for what all this could mean. Anyone else go through something similar to give me insight or where things were okay?