maybe this will help. Also ask for federal law where it is mandatory to give you this test. You want specific law. The Children's health Defense is an excellent website to get info.
NOTICE FOR EMPLOYERS, UNIVERSITIES AND OTHER INSTITUTIONS
MANDATING COVID-19 TESTS

April 26, 2021

This serves as notice that the mandate for any individual to be tested against
COVID-19 for employment or participation at a university or other institution
violates federal law. All COVID-19 tests, whether polymerase chain reaction (PCR),
antigen tests or others, are authorized, not approved or licensed, by the federal
government; they are Emergency Use Authorization (EUA) only. They merely “may
be effective.” Federal law states:
Title 21 U.S.C. § 360bbb-3(e)(1)(A)(ii)(I-III) of the Federal Food, Drug, and Cosmetic
Act states:
individuals to whom the product is administered are informed—