Skip to Main Content

For workplace safety and health, please call 800-321-6742; for mine safety and health, please call 800-746-1553; for Job Corps, please call 800-733-5627 and for Wage and Hour, please call 1-866-487-9243 (1 866-4-US-WAGE). This website is currently not being updated due to the suspension of Federal government services. The last update to the site was 10/1/2025. Updates to the site will start again when the Federal government resumes operations.

OSHA Cadmium Biological Monitoring Advisor

Initial Biological Monitoring Tests

Initial biological monitoring tests - are medical tests that are part of the "Initial examination." The employer provides an initial (preplacement) examination to all employees covered by the medical surveillance program required in paragraph 29 CFR 1910.1027(l)(1)(i). of this section. Initial (preplacement) medical examinations include the "initial biological monitoring" that tests for the levels of : Cadmium in urine (CdU), standardized to grams of creatinine (µg Cd/grCr); Beta-2 microglobulin in urine (B(2)-M), standardized to grams of creatinine (µg B2M/grCr), with pH specified, as described in Appendix F; and Cadmium in blood (CdB), standardized to liters of whole blood (µg Cd/lwb).

Back to previous page.