IgG Testing

IgG testing measures the levels of Immunoglobulin G (IgG) antibodies in your blood, which are proteins your immune system produces to fight infections. The test helps determine if you've been exposed to a specific virus or bacteria in the past and if your immune system has developed a response. It can also indicate whether you have long-term immunity after vaccination or infection. Results are usually reported as levels, reflecting the amount of IgG present. This test is useful for diagnosing, monitoring, and understanding immune responses, guiding healthcare decisions related to infections, vaccinations, or immune system health.