Complement Protein Concentration (C4) Test
- Category
- Immunity
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 2 days
- Fasting
- No Fasting
- Age
- 5+ Years
What Is This Test?
Measures complement C4 in your blood. C4 is a protein of the complement system.
Why this test is performed?
Low levels are seen in active lupus, hereditary angioedema and some kidney diseases.
Who should take this test?
Recurrent or unusual infections, or monitoring of immune status — as advised by a doctor.
Test Preparation
No fasting needed.
Medical disclaimer · for information only, not medical advice
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
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- Report time: In 2 days
- No fasting
Complement Protein Concentration (C3) Test
Immunity
Blood sample taken from a vein in your arm
₹645
₹1,430
54% off
- Report time: In 4 days
- No fasting
- Report time: In 4 days
- No fasting
- Report time: In 13 days
- No fasting
CH 50 Complement Total Test
Immunity
Blood sample taken from a vein in your arm
₹3,800
₹14,348
73% off
Frequently asked questions
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 15–39 hours after the sample reaches the lab. You will receive the report online.
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