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Complement 4 (C4) in Mumbai

Complement 4 (C4) detects auto-antibodies that can point towards an autoimmune condition and usually guides further, more specific testing.

Also known as: C4, Complement Component 4

Sample

Blood

Fasting

Not required

Report in

24 hours

Collection

Free at home

  • Pathologist-verified report
  • 24% off - no hidden charges
  • Age All ages

Total price

24% OFF
₹799₹1,049

You save ₹250

Call to book: 84250 40353
  • Free home sample collection
  • Reports within 24 hours
  • Verified by a pathologist

Quick test summary

Test name
Complement 4 (C4)
Sample
Blood
Sample type
Venous blood (from a vein in the arm)
Fasting
Not required
Report time
24 hours (next day)
Home collection
Available, free
Test code
HWP-T0096

What is the Complement 4 (C4)?

Complement 4 (C4) is a protein that is part of the immune system’s complement pathway. It’s often tested alongside C3 to help evaluate and monitor autoimmune conditions like lupus.

Why is the Complement 4 (C4) done?

Ordered alongside C3 to help evaluate and monitor autoimmune conditions like lupus and certain kidney diseases where complement levels can be informative.

It can help your doctor assess

Active lupus and certain other autoimmune or kidney conditions, alongside C3.

Who may need this test?

This test may be considered for:

People with known or suspected autoimmune conditions like lupus, for monitoring disease activity.

Whether this test is right for you depends on your symptoms, medical history and the reason for testing - your doctor can advise.

What does this test measure?

The concentration of the C4 complement protein in the blood.

C4

Complement System

Like C3, often falls during active autoimmune disease flares and is used together with C3 for monitoring disease activity over time.

Understanding your Complement 4 (C4) results

How to read your result

Your report should be read using the reference interval, unit and method shown by the performing laboratory. A result outside a reference interval does not automatically establish a diagnosis, and a result inside the interval does not rule out every health problem. Clinical interpretation depends on symptoms, history and other findings.

MarkerResultWhat it may be associated with
C4LowCan indicate active autoimmune disease (like a lupus flare) - interpreted alongside C3 and your clinical symptoms.

If a result is outside the range

If the Complement 4 (C4) is reported as high, low, positive, negative or otherwise outside the laboratory's stated interval, the meaning depends on the specific test and the reason it was ordered. Your clinician may consider repeat testing, related investigations or other clinical information before deciding what the result means.

Limitations of this test

C4 is typically used to monitor a known condition rather than diagnose one from scratch, and is always interpreted alongside C3 and clinical findings.

An abnormal result does not by itself mean you have a particular disease. Your doctor interprets results together with your symptoms, history and other tests.

Complement 4 (C4) normal range

ParameterReference rangeUnit
C410 - 40mg/dL

Typical adult ranges for guidance. Reference intervals vary with the laboratory method, age and sex - always read your result against the range printed on your own report.

How should I prepare for the Complement 4 (C4)?

  • No fasting is needed - you can eat and drink normally.
  • Drink water as usual - being well hydrated makes the blood draw easier.
  • Tell the collection team about any medicines and supplements you take.
  • Do not stop prescribed medicines unless your doctor tells you to.
  • Follow any additional instructions our team shares when you book.

How sample collection works

  1. 01

    Book

    Choose the test and a time slot online, or call us and we'll book it for you.

  2. 02

    Prepare

    Follow the preparation steps above for this test.

  3. 03

    Sample collection

    A trained phlebotomist collects the sample at your home - no extra charge.

  4. 04

    Laboratory processing

    Your sample is processed in our laboratory and reviewed by a pathologist.

  5. 05

    Report

    Your report is shared on WhatsApp and email, usually within 24 hours.

For a blood-based test, a small blood sample is collected by a trained healthcare professional, usually from a vein in the arm. The collection normally takes only a few minutes; mild temporary discomfort or bruising can occur at the puncture site.

What can affect the result?

Acute infections and inflammation can affect C4 levels alongside disease activity, so clinical context matters.

When should you talk to a doctor?

Laboratory results are interpreted together with your symptoms, medical history and other investigations. If your results are significantly abnormal, or you have symptoms that worry you, discuss them with a qualified doctor promptly.

Test details

Test name
Complement 4 (C4)
Test code
HWP-T0096
Department
Clinical Biochemistry
Sample type
Venous blood (from a vein in the arm)
Fasting
Not required
Report time
24 hours (next day)
Home collection
Available across Malad, Kandivali, Borivali & Goregaon
Price
₹799 (MRP ₹1,049, 24% off)
Availability
All days - lab open 24×7

References

Trusted public health sources for the information on this page:

  1. 1.What You Need to Know About Blood Testing - MedlinePlus (US National Library of Medicine)
  2. 2.Laboratory Tests - MedlinePlus (US National Library of Medicine)
  3. 3.How to Prepare for a Lab Test - MedlinePlus (US National Library of Medicine)
  4. 4.How to Understand Your Lab Results - MedlinePlus (US National Library of Medicine)

This information is for general awareness and does not replace advice from your doctor.

₹799₹1,049 24% off

C4 test price in Mumbai

The C4 test cost in Mumbai at HWP Diagnostic is ₹799 - 24% less than the MRP of ₹1,049. There are no extra charges for home sample collection. The same price applies across Malad, Kandivali, Borivali and Goregaon.

TestComplement 4 (C4)
Price at HWP Diagnostic₹799
MRP₹1,049 (you save ₹250 - 24% off)
Home collection chargeFree
Report time24 hours
FastingNot required
Available inMalad, Kandivali, Borivali & Goregaon (same price)

C4 test near me

Book the C4 test with free home sample collection anywhere in Malad, Kandivali, Borivali and Goregaon, or walk in to our lab in Malad West, Mumbai - open 24×7.

Home collection areas include

Malad WestMalwani & KharodiMalad EastKandivali WestKandivali EastBorivali WestGorai & Borivali WestIC Colony & MandapeshwarBorivali EastGoregaon WestBangur Nagar & Motilal NagarGoregaon EastAarey ColonyDahisarJogeshwari WestJogeshwari East

Directions on Google Maps

C4 full form

The full form of C4 is Complement 4. It is also known as C4, Complement Component 4.

Complement 4 (C4) near you

Home collection at the same price (₹799) across these areas, with our lab in Malad West open 24×7.

Included in 3 health packages

Get this test along with other important checks - usually for less than booking them separately.

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Frequently asked questions

Do I need to fast for this test?

No fasting is required.

Why is C4 tested alongside C3?

Together they give a more complete picture of complement system activity, which is useful for monitoring conditions like lupus over time.

What is the Complement 4 (C4)?

Complement 4 (C4) is a blood test. Complement 4 (C4) detects auto-antibodies that can point towards an autoimmune condition and usually guides further, more specific testing.

Why is the Complement 4 (C4) done?

The Complement 4 (C4) may be ordered when a healthcare professional needs information about the condition or health area assessed by this test. Complement 4 (C4) detects auto-antibodies that can point towards an autoimmune condition and usually guides further, more specific testing. At HWP Diagnostic the sample can be collected free at your home in Malad and nearby Mumbai areas, and the report is usually shared within the same day or next day. Please carry or upload your doctor's prescription where the test needs one, and discuss the result with your doctor for a full interpretation.

What does the Complement 4 (C4) test measure?

Complement 4 (C4) detects auto-antibodies that can point towards an autoimmune condition and usually guides further, more specific testing.

Who may need the Complement 4 (C4)?

The test may be relevant for people whose symptoms, medical history, screening needs or treatment monitoring match the purpose of the Complement 4 (C4).

How should I prepare for the Complement 4 (C4)?

No special preparation is needed for this test.

Do I need to fast for the Complement 4 (C4)?

No, fasting is not required for the Complement 4 (C4). You can eat and drink normally unless your doctor has advised otherwise.

What sample is required for the Complement 4 (C4)?

The Complement 4 (C4) is done on a blood sample.

How is the Complement 4 (C4) sample collected?

For a blood-based test, a small blood sample is collected by a trained healthcare professional, usually from a vein in the arm. The collection normally takes only a few minutes; mild temporary discomfort or bruising can occur at the puncture site.

How long does the Complement 4 (C4) take to report?

Reports for the Complement 4 (C4) are usually ready within 24 hours of sample collection. You receive them on WhatsApp and email.

What is the price of the Complement 4 (C4)?

The Complement 4 (C4) costs Rs 500 at HWP Diagnostic (MRP Rs 660). Home sample collection is free.

How do I understand my Complement 4 (C4) result?

Your report should be read using the reference interval, unit and method shown by the performing laboratory. A result outside a reference interval does not automatically establish a diagnosis, and a result inside the interval does not rule out every health problem. Clinical interpretation depends on symptoms, history and other findings.

What does a high or low Complement 4 (C4) result mean?

If the Complement 4 (C4) is reported as high, low, positive, negative or otherwise outside the laboratory's stated interval, the meaning depends on the specific test and the reason it was ordered. Your clinician may consider repeat testing, related investigations or other clinical information before deciding what the result means.

Can a Complement 4 (C4) diagnose a disease by itself?

The Complement 4 (C4) can provide important information, but laboratory results are generally interpreted together with symptoms, medical history, examination and other investigations. A single result should not be treated as a diagnosis without clinical context.

Can medicines affect the Complement 4 (C4) result?

Some medicines, supplements, food, exercise and other pre-test factors can affect particular laboratory results. Tell the healthcare professional about medicines and supplements you take, and do not stop prescribed medicines unless your clinician tells you to.

Is the Complement 4 (C4) available for home collection?

Yes. Free home sample collection for the Complement 4 (C4) is available across Malad, Kandivali, Borivali and Goregaon in Mumbai. You can also visit our Malad West lab, open 24x7.

What is the Complement 4 (C4) test?

Why is the Complement 4 (C4) test done?

Who may need the Complement 4 (C4) test?