C4 Complement
What is C4 in blood tests?
C4 Measurement
Low: Below 10mg/dL
High: Above 40mg/dL
About C4 Complement
C4 is an immune system protein involved in inflammatory responses.
The reasons for low C4
Low C4 levels are linked to autoimmune diseases like lupus and immune deficiencies. Managing autoimmune conditions and supporting immune function can help.
The reasons for elevated C4
High C4 levels indicate chronic inflammation, immune overactivity, or infections. Treating underlying conditions and reducing inflammation can help balance C4 levels.
Is it bad too have too high/low C4?
Persistently low C4 can weaken immune defenses, increasing the risk of recurrent infections and autoimmune disease flare-ups.
High C4 levels may indicate chronic inflammation, autoimmune disease activity, or excessive immune response leading to tissue damage.