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What is this test?

The Coxsackievirus A7 IgG Antibody Test is a blood test that detects IgG antibodies your body produces in response to Coxsackievirus A7 infection. This virus belongs to the enterovirus family and is known to cause hand, foot and mouth disease, particularly in children. The test uses a method called immunofluorescence to detect and measure the level of antibodies in your blood.

How is the test performed?

A healthcare professional will collect a blood sample from a vein in your arm. This sample is then sent to a laboratory where technicians use immunofluorescence techniques to detect and measure IgG antibodies specific to Coxsackievirus A7. The results are typically reported as a titer, which indicates the concentration of antibodies in your blood.

Why might I need this test?

Your doctor may order this test if you have symptoms of a recent viral infection, particularly if you have symptoms affecting the heart such as chest pain, shortness of breath, or abnormal heart rhythms. It may also be ordered if you have a history of hand, foot and mouth disease and are experiencing cardiac symptoms. The test helps determine if a Coxsackievirus A7 infection may be related to your current health condition.

What do the results mean?

A positive IgG result indicates that you have been infected with Coxsackievirus A7 at some point, as IgG antibodies develop after infection and typically remain in the body for a long time. The titer level can help determine if the infection is recent or past. Your doctor will interpret these results in combination with your symptoms, physical examination, and other test results to make a diagnosis.