Illinois Titer Testing
Many industries, such as healthcare or education, will require proof of vaccination or immunity against certain diseases. Some people may have no proof of their immunity, or they may be uncertain about their vaccination status. For people who need to provide proof of immunity to an employer in Illinois, Health Street offers antibody testing that can identify if a person has previously been infected with a specific disease or virus. We offer a variety of antibody testing services that can test for different antibodies, such as varicella (Chickenpox), hepatitis A, hepatitis B, hepatitis C, measles, mumps, rubella, or COVID-19.
Registering online for a titer test in Illinois is easy. Simply click the “Register Now” button below. If you have questions regarding our services or would like to schedule your appointment via phone, we can also be reached at (888) 378-2499.

Frequently Asked Questions
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Does Illinois require you to titer test?
Illinois titer test regulations and vaccination laws do not generally require titer tests and vaccinations, with the exception of healthcare workers and other “high-risk” industries. However, nursery personnel are required to show evidence of a previous rubella infection or proof of vaccination. Evidence of a previous infection is shown with titer testing.
What is different from the federal regulations?
Illinois antibody test regulations and vaccination laws require certain titer tests or proof of vaccinations for healthcare workers and other high-risk industries. However, not all vaccine requirements meet the recommendations set by the Centers for Disease Control and Prevention (CDC) and the Occupational Safety and Health Administration (OSHA).
The CDC recommends the following vaccinations for healthcare workers and employees that are at-risk for communicable diseases:
OSHA recommends that employees in high-risk industries like healthcare be fully vaccinated against COVID-19.
What does a positive titer test mean?
A positive titer test means that an individual’s blood contains antibodies for a communicable disease. The presence of antibodies means that an individual has immunity to that disease. A negative test shows a lack of immunity and vaccination should be considered.
Why are antibody tests (titer tests) important?
Antibody tests help to ensure safety in the workplace by determining which employees have immunity to certain contagious diseases. Employees that do not have immunity should consider vaccination. Immunity among employees helps prevent the spread of contagious diseases.
What do titer tests test for?
Titer tests analyze the blood for the presence of antibodies to certain communicable diseases. These diseases include measles, mumps, rubella, hepatitis A, B, and C, meningitis, influenza, COVID-19, tetanus, diphtheria, and pertussis. A positive test determines immunity to that disease.
How much do antibody tests (titer tests) cost?
This depends on which type of antibody test is ordered. Health Street offers a variety of individual antibody testing services as well as package deals. For a comprehensive list of antibody tests and pricing, take a look at our antibody test registration page.
How long are titer tests good for?
Titer test results are records of whether a person has tested positive or negative for immunity against certain diseases. Depending on the type of disease, some employers may require employees to periodically test for antibodies, and may require employees to receive certain vaccinations before they are permitted to work. The frequency of testing depends on many factors, including the industry and the type of disease or vaccine. For more information about specific diseases and the recommended vaccine schedule, try taking a look at our Vaccines & Immunizations page.
Illinois Antibody Industry Regulations
Illinois titer test regulations require healthcare workers to show immunity to measles, mumps, and rubella (MMR), either by titer testing or proof of vaccination. Hospitals are also required to offer hepatitis B and influenza vaccines to employees, although the vaccines are not required.
Illinois titer test regulations and vaccination laws also require COVID-19 vaccinations for healthcare workers, school and higher education employees, and state employees. However, employees can choose not to receive the vaccine and instead receive weekly COVID-19 testing.