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Colorado Department of Public Health and Environment
Laboratory Services Division

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Serology Laboratory

A serology blood test is performed to detect and measure the levels of
antibodies as a result of exposure to a particular bacteria or virus.

When we are exposed to bacteria or viruses (antigens), the body’s immune system produces specific antibodies against the organism.

Antibody levels (antibody titer) help physicians to determine whether an infection occurred recently, or occurred years ago.
The Serology Lab:
  • Performs testing for blood borne pathogens including HIV, Hepatitis B and Hepatitis C 
  • Analyzes blood specimens for diseases of public health significance, e.g. vaccine- preventable diseases, diseases transmitted from animals to humans and mosquito-borne diseases.
  • Participates in the investigation of disease outbreaks significant to public health.
  • Analyzes tissue specimens from animals suspected of exposing humans to rabies and plague.
Tests Performed in the Serology Lab
• Syphilis antibody
• Tularemia antibody
• Hantavirus antibody
• Hepatitis A antibody
• Hepatitis B Surface antigen
• Hepatitis B antibody
• Hepatitis C Virus antibody

• HIV 1 & 2 antibodies
• Measles antibody
• Plague antigen
• Rabies virus
• Rubella antibody
• Tularemia antigen
• West Nile Virus antibody

Link to serology test prices.

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