Alternative Names toxoplasma serology, toxoplasma antibody titre
Definition This test checks for antibodies to a parasite known as toxoplasma in the blood.
Who is a candidate for the test? This test is often used to check pregnant women for toxoplasmosis, one of the so-called TORCH infections that can be passed to the foetus. If antibodies to toxoplasma develop during pregnancy, this may indicate the presence of a new case of toxoplasmosis. This infection may cause birth defects in an unborn child when a mother catches it during pregnancy. If the woman has antibodies before pregnancy, it usually means the baby will be protected from the infection. This test is also done on a baby's blood to help diagnose toxoplasmosis in the newborn.
How is the test performed? A blood sample is taken from a vein on the forearm or hand. The blood is taken to the laboratory and tested to see if there are toxoplasma antibodies in it.
What is involved in preparation for the test? Specific instructions are available from a doctor. Generally, no preparation is required.
What do the test results mean? The amount and type of antibodies present is important and there are a range of different tests but generally speaking:
A low antibody count usually means the person has never been infected with the disease.
A higher amount means the person may have had an old infection.
A very high amount of antibodies usually means an active toxoplasma infection is present.
Author: David T. Moran, MD Reviewer: HealthAnswers Australia Medical Review Panel Editor: Dr David Taylor, Chief Medical Officer HealthAnswers Australia Last Updated: 1/10/2001 Contributors Potential conflict of interest information for reviewers available on request
