The current major screening tests detect antibodies rather than the virus itself.

Monospot testing can usually detect antibodies 2 to 9 weeks after a person is infected.

It detects antibodies that are already attached to red blood cells.

This is when the tests can no longer detect antibodies in a patient's serum.

These tests can be used to detect both antibodies and antigens.

The test simply detects antibodies that have passed from the mother to the infant through the placenta.

But it may take three or more months after a tick bite for tests to detect such antibodies.

If celiac disease is suspected, your doctor will order certain blood tests to detect and measure specific antibodies.

As an alternative, some doctors now use a blood test to detect antibodies to specific allergens.

A laboratory test that detects specific antibodies to components of a virus.