The purpose of screening is early diagnosis and treatment. Screening tests are given to people who do not have current symptoms, but who may be at high risk for certain diseases or conditions.
In the case of chickenpox, screening can be done to see whether you’ve acquired an immunity to the disease.
Blood tests —A blood sample is taken and sent to a lab. Levels of antibodies are measured in the blood to see if you have developed immunity to chickenpox from an unrecognized previous infection or a forgotten immunization.
People who have had chickenpox usually develop immunity to it. Since 1995, a chickenpox vaccine has been available. For this reason, the National Immunization Program recommends that if you are unsure if you’ve ever had chickenpox or been vaccinated, you should talk to your doctor about having a blood test to determine whether or not you have immunity. If the tests are negative, you are not immune. In most cases, you should then receive the chickenpox vaccine to protect you from getting chickenpox. Vaccination is particularly important for adolescents and adults, for whom infection with chickenpox may be severe or life threatening.
Chickenpox. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T116084/Chickenpox. Updated June 19, 2017. Accessed March 14, 2018.
Chickenpox. Family Doctor—American Academy of Family Physicians website. Available at: http://familydoctor.org/familydoctor/en/diseases-conditions/chickenpox.html. Updated January 2017. Accessed March 14, 2018.
Chickenpox (varicella). Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/chickenpox. Updated June 28, 2016. Accessed March 14, 2018.
Memish ZA, Oni GA, Bannatyne RM, et al. The cost-saving potential of prevaccination antibody tests when implementing a mass immunization program. Mil Med. 2001;166(1):11-13.
Ronan K, Wallace MR. The utility of serologic testing for varicella in an adolescent population. Vaccine. 2001;19(32):4700-4702.
Last reviewed March 2018 by EBSCO Medical Review Board James P. Cornell, MD Last Updated: 3/15/2015