A Coggins test is a blood test used to identify the presence of antibodies for Equine Infectious Anemia (EIA), a potentially fatal disease with no current treatment available. EIA is caused by Equine Infectious Anemia Virus (EIAV), and it affects the immune system of animals in the equidae family. The Coggins test is the most popular and well-known test among horse industry professionals to detect if a horse has EIA antibodies. To perform a Coggins test, a licensed veterinarian must draw blood from the horse and send it to an accredited lab for analysis. The lab will conduct a test to detect the EIA antibody, which will only be present if the horse has had the EIA virus. The test results expire one year from the testing date, and a negative Coggins test is typically required before a horse can take part in competitions and events. Testing is also highly recommended for all horses that spend time near other horses, whether in fields or boarding stables. In the United States and Canada, Coggins testing is required when exporting horses across the border, and many states require testing in order to take horses across state lines.