The biological monitoring requirements under the Final Rule for Lead.

This is an OSHA interpretation letter responding to a question about biological monitoring under the lead standards 29 CFR 1910.1025(j)(2) and 1926.62(j)(2). It states that the ZPP test is a required element of medical surveillance, that omitting it can be cited as an other-than-serious violation, and that the FEP test is accepted as comparable.