Colorado Titer Testing

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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 Colorado, 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 Colorado 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.

Choose Antibody Testing in Colorado

Health Street provides a range of antibody testing options in Colorado to help determine immunity to various diseases. See the available tests below.

Hepatitis A Antibody Test

(starting at $179)

Check a person's immunity to hepatitis A.


Hepatitis B Antibody Test

(starting at $199)

Find out if a person has immunity to hepatitis B.


Hepatitis C Antibody Test

(starting at $219)

Verify if a person has immunity to hepatitis C.


Triple Hepatitis Package

(starting at $549)

One test to check for immunity of hepatitis A, B, and C.


MMR Titer

(starting at $249)

Check if a person has immunity to measles, mumps, and rubella.


Varicella Titer

(starting at $189)

Determine if a person has immunity to Chickenpox (varicella virus).


Triple Antibody Package

(starting at $595)

Look for antibodies for: hepatitis B, measles, mumps, rubella, and varicella.


Total Antibody Package

(starting at $895)

The most comprehensive antibody testing package: hepatitis A, B, and C, measles, mumps, rubella, and varicella.


Search for Antibody Test By City, State, or ZIP

Overview of Colorado Regulations

Colorado Antibody Test Regulations

Colorado antibody test regulations do not mandate antibody tests and vaccinations for adults, with few exceptions for healthcare workers.

To ensure safety with a lack of vaccination requirements, university students, staff, and faculty should consider antibody tests for COVID-19 and other communicable diseases like varicella, pneumococcal pneumonia, or hepatitis B.

Although Colorado titer test regulations do not generally exist, state residents 19 and older should still follow federal Center for Disease Control and Prevention (CDC) guidelines for vaccination and antibody testing.

Colorado Antibody Industry Regulations

State vaccination laws and Colorado antibody test regulations do not require hospital employees to prove immunization or be vaccinated for varicella, pneumococcal pneumonia, or hepatitis B. However, Colorado does require hospitals to hold a written policy regarding the annual influenza vaccine and ensure that healthcare workers provide proof of immunization or vaccination records.

Some industries require COVID-19 vaccination or weekly testing among employees. COVID-19 vaccinations are required in Colorado for state employees, federal employees, and workers in healthcare facilities and hospitals. Employees that are not vaccinated are urged to wear a mask while around other workers. COVID-19 antibody tests are available for anyone wishing to check for the presence of antibodies to the virus. However, it isn't yet known how long the presence of antibodies offers protection from this illness.

Some universities in Colorado have vaccine requirements for MMR, meningitis, and COVID-19. Requirements for each vaccine may vary for students living on- and off-campus. Titers for these vaccines may be acceptable in place of vaccinations at some universities.

Relevant Colorado Laws, Acts, and Legislation

As of September 2021, all Colorado state employees must submit proof of being fully vaccinated against COVID-19 or submit to weekly COVID-19 antibody testing.
As of September 9, 2021, all federal employees must be fully vaccinated against COVID-19.
Healthcare workers in Colorado that work directly with patients are required to be vaccinated against COVID-19. Federally, COVID-19 vaccination is required in Medicaid and Medicare-certified facilities.
Healthcare workers are not required to prove immunity to varicella, pneumococcal pneumonia, or hepatitis B.
Healthcare facilities must develop policies to ensure employees have immunity to influenza and comply with yearly influenza vaccination, unless exempt for religious or medical reasons.

Frequently Asked Questions

Why are antibody tests (titer tests) important?

Antibody tests, which detect the presence of antibodies in the blood, determine if someone has immunity to a certain disease. Titer testing prevents contagious disease outbreaks and eliminates the need for unnecessary or duplicate vaccinations.

What do titer tests test for?

Titer tests are blood tests, analyzed in a lab. Titer tests check for the presence of antibodies to certain diseases, including varicella, pneumococcal pneumonia, hepatitis A, B, and C, measles, mumps, rubella, and COVID-19.

What does a positive titer test mean?

A titer test checks for antibodies of certain diseases. A positive test means antibodies were detected and the person has immunity to the disease. A negative test means no immunity and vaccination should be considered.

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.


"Immunization Administration Requirements for Hospital Employees – CO." Centers for Disease Control and Prevention (CDC),
"50-State Chart on Vaccines, Exemptions, and Related State Issues." Fisher Phillips,
"Vaccine laws and regulations." Colorado Department of Public Health & Environment, 25 January 2022,
"COVID-19 Vaccination Reporting & Employee Testing." Colorado Division of Human Resources,
"Executive Order on Requiring Coronavirus Disease 2019 Vaccination for Federal Employees." The White House, 9 September 2021,
"Immunization Requirement Instructions." University of Colorado Boulder – Health & Wellness Services,
"Vaccine Information for Adults." Centers for Disease Control and Prevention (CDC),