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Serological Testing Laboratory Services: Serology Blood Test

Serology is a blood test to detect the presence of antibodies against a microorganism. Certain microorganisms (antigens) stimulate the body to produce antibodies during an active infection.
Why Serology Blood Test is performed
A serology test can determine if you have ever been exposed to a particular microorganism (antigen), but this does not necessarily indicate a current infection.
If antibodies are found, exposure to some type of antigen can be suspected. As the disease worsens, more antibodies will be present. If a disease is suspected, the test may need to be repeated 10 days to 2 weeks after the first test.
Detection of antibodies can be used to either diagnose an active or previous infection, or to determine if you are immune to reinfection by an organism. Some of the different diseases that can be detected include:
  • Amebiasis
  • Anthrax
  • Brucellosis
  • Human immunodeficiency virus (HIV)
  • Fungal infection
  • Measles
  • Rubella
  • RSV
  • Syphilis
  • Tularemia
  • Viral hepatitis (various types)

Additional conditions under which the test may be performed:

  • Amebic liver abscess
  • Fifth disease
  • Fungal arthritis
  • Meningitis, cryptococcal
  • Meningitis, H. influenza
  • Meningitis, meningococcal
  • Viral arthritis