Washington Titer Testing
Some Washington employers require antibody testing, also known as titer testing, as part of their pre-employment screening process. Existing employees may also be tested periodically as part of the process to ensure safety in the workplace, especially for industries such as healthcare or education. Titer testing is the first step to determining if someone is immune to certain diseases, such as varicella (Chickenpox), hepatitis A, hepatitis B, hepatitis C, measles, mumps, rubella, or COVID-19. If the antibody test indicates that an individual is not immune, Health Street can also provide services for vaccines and immunizations.
To register online for a titer test in Washington, simply click the “Register Now” button below. To schedule via phone or to contact us with questions regarding your antibody testing services, please reach us at (888) 378-2499.
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Overview of Washington Regulations
Washington Antibody Testing Regulations
The state of Washington generally does not mandate any vaccinations for adults, regardless of their profession. There are also no Washington antibody test regulations requiring individuals to provide proof of immunity to any disease.
While immunizations are not required, the Washington State Department of Health follows the U.S. Center for Disease Control and Prevention’s (CDC) vaccination recommendations for adults aged 19 and over. This includes annual vaccinations for seasonal influenza and a Td (tetanus, diphtheria) or Tdap booster every 10 years.
The Washington State Adult Vaccine Program provides recommended vaccinations at no cost for adults who are uninsured or underinsured. Adults who take a Washington antibody test and find that they are not immune to certain vaccine-preventable diseases may want to consider taking advantage of this program.
There are no statewide vaccination requirements or Washington titer test regulations for college students. However, each institution has its own vaccination rules. While some only recommend certain vaccinations, others require students to provide proof of vaccinations to attend. Many institutions that require vaccinations will accept a titer test as proof of immunity to a specific disease instead of a vaccination record.
Colleges and universities offering group or on-campus housing must also provide students with information regarding meningococcal disease, including vaccination recommendations.
Washington Antibody Industry Regulations
With the exception of COVID-19, the state of Washington does not mandate vaccines for healthcare workers. However, Washington law states that employers must offer a no-cost hepatitis B vaccine series for all employees who have occupational exposure. Washington titer test regulations exclude employees who have had an antibody test proving that he or she is immune to hepatitis B.
In December of 2021, Washington Governor Jay Inslee issued Proclamation 21-14.3, requiring certain individuals to be fully vaccinated against COVID-19 and to submit proof of vaccination. This includes employees, on-site contractors, and on-site volunteers for:
Hospice and in-home care providers are exempt from this requirement. There are also exemptions for disability and “sincerely held religious beliefs, practices, or observances” – unless providing the accommodation would place undue hardship on the employer.
The Equal Employment Opportunity Commission (EEOC) has stated that requiring a COVID-19 antibody test as a condition of employment is a violation of the Americans with Disabilities Act (ADA). Therefore, there are no federal or Washington antibody test regulations requiring COVID-19 titer tests for employment.
Relevant Washington Laws, Acts, and Legislation
Frequently Asked Questions
What is an antibody titer score?
To produce an antibody titer score, a person’s serum is diluted and then retested for antibodies. If antibodies can still be detected, then the serum is diluted and then tested again. This process is repeated until the person’s serum has been diluted as much as possible, but the presence of antibodies can still be detected.
What do titer tests test for?
A titer test is a blood test that is used to detect the presence of antibodies in the blood. The purpose of a titer test is to determine if a person has immunity against certain diseases. These results can be used to provide employers with proof of immunity, or to determine if a person needs to receive a certain vaccine.
What does a positive titer test mean?
If titer test results show that a person is positive, this may indicate that the individual has previously been infected with the disease or vaccinated against it. The individual may be presumed to have immunity against that specific disease, and vaccination may not be required at this time.