Disclaimer: This test information is provided for general awareness and does not replace professional medical advice. Test reports must be interpreted by a qualified healthcare professional. Read our disclaimer policy.
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Complement C4 Test
About the Complement 4 (C4) Test
Direct answer: The Complement C4 test is a blood test that measures complement protein C4 to evaluate immune system function.
The Complement 4 (C4) Test measures complement protein C4 in the blood. Definition: Complement C4 is an immune system protein involved in inflammation control and infection defence. Abnormal C4 levels help identify autoimmune activity, chronic inflammation, or immune system deficiencies.
This test is commonly advised for individuals with suspected autoimmune disorders, lupus monitoring, chronic infections, or unexplained inflammation. Definition: Autoimmune screening refers to laboratory testing used to detect abnormal immune responses against the body’s own tissues. At healthcare nt sickcare, the Complement C4 test is available with a Home Collection Facility across Pune and a Direct Walk-in Facility, providing dependable immune health assessment in Maharashtra.
Sample & Method
A blood sample is collected through venepuncture (drawing blood from a vein) and analysed using immunoassay techniques to measure complement C4 protein concentration.
Related Resources
Learn more about immune health in our health articles. Check test readiness on our test preparation guides. Compare preventive screenings on our health checkup comparison page. View diagnostic services on our services.
Frequently Asked Questions
Disclaimer: This test information is provided for general awareness and does not replace professional medical advice. Test reports must be interpreted by a qualified healthcare professional. Read our disclaimer policy.
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Description
About the Complement 4 (C4) Test
Direct answer: The Complement C4 test is a blood test that measures complement protein C4 to evaluate immune system function.
The Complement 4 (C4) Test measures complement protein C4 in the blood. Definition: Complement C4 is an immune system protein involved in inflammation control and infection defence. Abnormal C4 levels help identify autoimmune activity, chronic inflammation, or immune system deficiencies.
This test is commonly advised for individuals with suspected autoimmune disorders, lupus monitoring, chronic infections, or unexplained inflammation. Definition: Autoimmune screening refers to laboratory testing used to detect abnormal immune responses against the body’s own tissues. At healthcare nt sickcare, the Complement C4 test is available with a Home Collection Facility across Pune and a Direct Walk-in Facility, providing dependable immune health assessment in Maharashtra.
Sample & Method
A blood sample is collected through venepuncture (drawing blood from a vein) and analysed using immunoassay techniques to measure complement C4 protein concentration.
Related Resources
Learn more about immune health in our health articles. Check test readiness on our test preparation guides. Compare preventive screenings on our health checkup comparison page. View diagnostic services on our services.
Frequently Asked Questions
Disclaimer: This test information is provided for general awareness and does not replace professional medical advice. Test reports must be interpreted by a qualified healthcare professional. Read our disclaimer policy.
Image generated using Google Gemini and Shopify Magic.











