Test Detail
Understanding the Test
Interpreting Results
Other Tests
Content created by
Written by
Dr. Shreya Gupta
BDS, MDS - Oral and Maxillofacial Pathology
Reviewed by
Dr. Ashish Ranjan
MBBS, MD (Pharmacology)
Want to know more?
Read our Editorial Policy

Complement 3

(C3)
This test is for
Male, Female
Test Preparation
  1. Overnight fasting is preferred.

Understanding Complement 3


What is Complement 3?

Complement 3 test checks for activity of a protein of complement system. Complement system is meant to aid the body's defense mechanism. It helps in destroying the foreign particles and damaged cells or proteins. Measuring complement C3 helps in diagnosis of the autoimmune disorders such as lupus, vasculitis, glomerulonephritis, rheumatoid arthritis, myasthenia gravis and certain bacterial infections.
Symptoms of altered C3 activity include fever, joints pain, fatigue, nausea, swelling and frequent bacterial infections. This test is mostly recommended along with C4 test.

What is Complement 3 used for?

  1. It may be ordered if you have unexplained edema, inflammation or symptoms of an auto immune disorder such as SLE 
  2. To monitor the severity of a complement deficiency disease 

Interpreting Complement 3 results


Interpretations

  • Decreased C 3 levels are associated with increased risk of auto immune disorders like SLE, recurrent infections caused by fungi and parasites, hereditary angioedema, hepatitis, malnutrition, kidney diseases 
  • Complement proteins are increased in acute and chronic inflammation. Other common causes of increased complement activity are ulcerative colitis, thyroiditis, acute myocardial infarction, cancers like leukemia

INDIA’S LARGEST HEALTHCARE PLATFORM

260m+
Visitors
31m+
Orders Delivered
1800+
Cities
Get the link to download App
Reliable

All products displayed on Tata 1mg are procured from verified and licensed pharmacies. All labs listed on the platform are accredited

Secure

Tata 1mg uses Secure Sockets Layer (SSL) 128-bit encryption and is Payment Card Industry Data Security Standard (PCI DSS) compliant

Affordable

Find affordable medicine substitutes, save up to 50% on health products, up to 80% off on lab tests and free doctor consultations.

Know more about Tata 1mgdownArrow

Access medical and health information

Tata 1mg provides you with medical information which is curated, written and verified by experts, accurate and trustworthy. Our experts create high-quality content about medicines, diseases, lab investigations, Over-The-Counter (OTC) health products, Ayurvedic herbs/ingredients, and alternative remedies.

Order medicines online

Get free medicine home delivery in over 1800 cities across India. You can also order Ayurvedic, Homeopathic and other Over-The-Counter (OTC) health products. Your safety is our top priority. All products displayed on Tata 1mg are procured from verified and licensed pharmacies.

Book lab tests

Book any lab tests and preventive health packages from certified labs and get tested from the comfort of your home. Enjoy free home sample collection, view reports online and consult a doctor online for free.

Consult a doctor online

Got a health query? Consult doctors online from the comfort of your home for free. Chat privately with our registered medical specialists to connect directly with verified doctors. Your privacy is guaranteed.