If your child is seeing a peditrician on a regular basis they will almost certainly test for lead levels at age 1 or 2. They do not test for it or do other blood work routinely after than unless high levels are found.
I remember getting a finger stick almost every visit to the doctor as a kid, but that was just for cell counts and maybe sugar that they did in the office, not a full panel of tests.
Yes, this is what I meant but phrased it poorly above. I guess a better way to say it is that almost every child has had blood work done an annual basis. But it reads like kids get a full blood workup every year, which is not true.