New Hampshire Titer Testing

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Some New Hampshire 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 New Hampshire, 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.

Choose an Antibody Test in New Hampshire

Assess a person's immunity to infectious diseases with the antibody testing options provided by Health Street in New Hampshire. Find the right test for you below.

Hepatitis A Antibody Test

(starting at $179)

Assess hepatitis A immunity.


Hepatitis B Antibody Test

(starting at $199)

Determine immunity to hepatitis B.


Hepatitis C Antibody Test

(starting at $219)

Evaluate immunity to hepatitis C.


Triple Hepatitis Package

(starting at $549)

Test for immunity to hepatitis A, B, and C in one go.


MMR Titer

(starting at $249)

Check immunity to measles, mumps, and rubella.


Varicella Titer

(starting at $189)

Confirm immunity to Chickenpox (varicella virus).


Triple Antibody Package

(starting at $595)

Detect antibodies for hepatitis B, MMR, and varicella.


Total Antibody Package

(starting at $895)

Comprehensive antibody testing for hepatitis A, B, C, MMR, and varicella.


Search for Antibody Test By City, State, or ZIP

Overview of New Hampshire Regulations

New Hampshire Antibody Industry Regulations

There are no New Hampshire antibody test regulations that require immunizations or antibody testing for healthcare workers. New Hampshire titer test and vaccine laws do not require hospitals to ensure employees receive the MMR vaccine. However, if the facility experiences a case of measles, then that facility must offer the measles vaccine to vulnerable workers. Hospitals and residential care facilities are required to offer an annual influenza vaccine to all consenting employees.

Relevant New Hampshire Laws, Acts, and Legislation

N.H. Code Admin. R. Ann. He-P 301.05, which relates to health care facilities, states that if there is a case of measles in the facility, vulnerable employees must be given the measles vaccine.
N.H. Rev. Stat. Ann. § 151:9-b requires that hospitals and residential care settings must offer the influenza vaccine to their employees.
New Hampshire HB 1099 prevents the requirement of "vaccine passports" for services by the department of health and human services.
N.H. HB 1224 prohibits New Hampshire state and local governments from certain COVID-19 mandates and prevents employers (and places of public accommodation) from discriminating against employees based on vaccination status. In addition, the vaccination status of an individual is a "protected class."

Frequently Asked Questions

Does New Hampshire require you to titer test?

There are no New Hampshire titer test or vaccination laws requiring vaccinations or titer tests. In some cases, employers may be required to offer vaccines to employees. For example, hospitals are required to provide the influenza vaccine to employees, but employees are not required to be vaccinated.

Some universities in New Hampshire require students and faculty to be vaccinated against COVID-19. Universities may require the vaccination of students with MMR, Meningococcal, Tdap, and Varicella vaccines. However, in New Hampshire, titer tests may be acceptable in place of vaccination in some cases.

What is different from federal regulations?

New Hampshire titer test regulations and vaccine requirements are nearly nonexistent. However, the federal Center for Disease Control and Prevention (CDC) sets vaccination and titer testing guidelines. The CDC recommends healthcare workers be vaccinated or show immunity to hepatitis B, influenza, varicella, measles, mumps, and rubella (MMR), tetanus, diphtheria, pertussis (Tdap), and meningitis. In New Hampshire, titer tests may determine immunity to these communicable diseases and prevent unnecessary vaccinations.

The Occupational Safety and Health Administration (OSHA) recommends vaccination for COVID-19 to protect employees and strongly recommends offering employees paid time off to receive the vaccine and recover from its side effects.

Why are antibody tests (titer tests) important?

Since New Hampshire does not require vaccinations, titer testing can be used to check for immunity among employees to certain diseases. Immunity in the workplace is important to help prevent the spread of dangerous and contagious diseases.

What do titer tests test for?

Titer tests check for antibodies of specific contagious diseases in the blood. New Hampshire titer tests include measles, mumps, rubella (MMR), COVID-19, hepatitis A, B, and C, and Varicella. The presence of antibodies to these diseases means that person has immunity.

What does a positive titer test mean?

A titer test is a blood draw that detects antibodies to certain contagious diseases such as varicella, hepatitis and COVID-19. A positive test means that antibodies for a particular disease were detected, and that person has immunity to the disease.

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.


"State Immunization Laws for Healthcare Workers and Patients." Centers for Disease Control and Prevention (CDC),
"State Immunization Laws for Healthcare Workers and Patients." Centers for Disease Control and Prevention (CDC),
Crompton, Jennifer. "UNH to require COVID-19 vaccination for all employees, including student workers, at Durham campus." WMUR, 22 October 2021,
"Incoming Students." University of New Hampshire,
"Recommended Vaccines for Healthcare Workers." Centers for Disease Control and Prevention (CDC),
"Protecting Workers: Guidance on Mitigating and Preventing the Spread of COVID-19 in the Workplace." United States Department of Labor, Occupational Safety and Health Administration (OSHA),
"N.H. Rev. Stat. Ann. § 151:9-b." The General Court of New Hampshire,
"New Hampshire HB 1099." The General Court of New Hampshire,
"N.H. HB 1224." The General Court of New Hampshire,
"N.H. HB 1260." The General Court of New Hampshire,