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Seroconversion period

The seroconversion period is a time during which a person who has an infection does not test positive for it. This period occurs before a person has produced a high enough number of antibodies for a test to detect the condition.

Antibodies are proteins made by the body's natural defense system (immune system) to attack and destroy foreign substances, such as bacteria and viruses. The seroconversion period is also called the antibody development period.

The length of the seroconversion period depends on the type of infection. For example, with the human immunodeficiency virus (HIV), the seroconversion is usually between 1 and 3 months, although it can be as short as 2 weeks or as long as 6 months. During the seroconversion period, an infected person can transmit the disease or condition even if he or she does not have signs of the infection.

Author Jeannette Curtis
Author Caroline Rea, RN, BS, MS
Editor Kathleen M. Ariss, MS
Editor Susan Van Houten, RN, BSN, MBA
Associate Editor Tracy Landauer
Associate Editor Pat Truman, MATC
Primary Medical Reviewer Patrice Burgess, MD
- Family Medicine
Primary Medical Reviewer Adam Husney, MD
- Family Medicine
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Last Updated May 25, 2007

WebMD Medical Reference from Healthwise

Last Updated: May 25, 2007
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