An immunity titer test measures antibodies linked to prior vaccination or past exposure, helping document immune status for a school, employer, clinical program, travel requirement, or personal record. Options differ by the antibodies measured: measles, mumps, and rubella IgG; hepatitis B surface antibody; varicella-zoster IgG; or rabies vaccine response. Start with the requirement you need to meet and identify whether it calls for one infection-specific result, MMR results, or several immunization-related antibodies. A result should be reviewed with the requesting organization or a healthcare professional when documentation rules or symptoms matter.
What immunity antibody tests measure
These tests look for antibodies associated with specific infections or vaccines rather than measuring overall immune strength. Measles, mumps, and rubella immune-status testing measures IgG antibodies to each of those three viruses. Hepatitis B surface antibody testing measures hepatitis B surface antibody immunity quantitatively. Varicella-zoster virus IgG testing measures an antibody associated with chickenpox immunity. The rabies vaccine response end-point titer reports the response named in the test. Antibody findings support documentation and clinical assessment, but the organization requesting records determines what result format and timing it accepts.
Use the requested disease and result format
A requirement for MMR documentation calls for results tied to measles, mumps, and rubella, not a single general antibody result. The Measles, Mumps, Rubella (MMR) Immunity Profile reports all three IgG immune-status measurements. When a requirement names hepatitis B, the Hepatitis B Surface Antibody Test provides a quantitative hepatitis B surface antibody result, while a chickenpox requirement aligns with varicella-zoster virus IgG. The Immunization Panel combines hepatitis B surface antibody immunity with measles, mumps, rubella, and varicella-zoster IgG results for shoppers asked to document several immunization-related antibodies at once.