A 17-year-old well-female has come to the clinic to get a rubella immunization that is required by the college she plans to attend. Before administering this immunization, the client should have which screening or test?

The correct answer is C: Pregnancy test. Before administering the rubella immunization, it is crucial to confirm that the client is not pregnant, as the live rubella vaccine can pose risks to a developing fetus. A pregnancy test is necessary to ensure the safety of the client and potential offspring.
Choice A (Complete blood count) is not necessary for rubella immunization.
Choice B (Lead screening) is unrelated to the rubella vaccine.
Choice D (Tuberculosis screening) is important for some vaccinations but not specifically for rubella.
Therefore, the most relevant and essential screening before rubella immunization is a pregnancy test.