IgG Subclass 4 (IgG4) near me in Mumbai

The IgG Subclass 4 (IgG4) test measures the level of immunoglobulin G subclass 4 (IgG4) antibodies in the blood. IgG4 is one of the four subclasses of IgG antibodies and plays a role in regulating immune responses. Unlike some other antibodies that strongly trigger inflammation, IgG4 is often involved in modulating immune activity during long-term or repeated immune stimulation.

Abnormal or elevated IgG4 levels have been associated with certain immune-mediated and inflammatory conditions, including IgG4-related disease. However, raised IgG4 levels are not specific to a single condition and must be interpreted along with clinical symptoms, imaging findings, and other laboratory tests. For this reason, IgG4 testing is used as a supportive test to aid diagnosis and monitor disease activity rather than as a standalone test.