Complement C4 is a blood test that measures the activity of a protein involved in the complement system, a group of proteins that circulate in the bloodstream. These proteins work closely with your immune system to help defend against infections and contribute to inflammation. The Complement C4 test is often used to assess immune system function and detect autoimmune conditions. It typically involves a single test to evaluate the level of C4 activity in your blood.
Test Type: Blood
Reporting: Next Day
Free Home/Office Sample Collection
Fasting: Fasting is mandatory
Best & Honest Price
One Prick Sample Collection Policy
Yes. Book home collection when ordering online or call our team. Trained phlebotomists visit your address at the scheduled slot.
Most routine tests are reported same day after sample validation. Specialized tests may take longer — see your booking confirmation.
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