C4 Complement Test at Home in Dubai
Also known as: C4, COMPLEMENT C4
Included
About the Test
C4 is a protein in the classical pathway of the complement system, part of the immune defence that helps destroy microbes and clear immune complexes. This blood test measures C4 and is used mainly to investigate and follow autoimmune disorders such as lupus, as well as some inherited conditions like hereditary angioedema. Levels that fall can point to active immune consumption, so C4 is usually assessed together with C3 and clinical findings rather than in isolation.
What is it? A blood test measuring complement component 4, also known as C4 or complement C4, a protein in the classical complement pathway.
- Smart Report
- Home Collection
- DHA Licensed Staff
- Doctor Reviewed
Test Included: 1 Test
C4 Complement(1 Test)
C4 Complement test: purpose, preparation and results
Why take the C4 Complement test?
- Support the diagnosis and monitoring of autoimmune conditions, particularly systemic lupus erythematosus
- Help investigate recurrent episodes of unexplained swelling, as low C4 features in hereditary angioedema
- Track immune activity over time when measured alongside C3 during treatment or flare-ups
How to prepare for the C4 Complement test
No fasting is required for the C4 Complement test. Eat and drink normally, and our DHA-licensed nurse draws the sample at your chosen location in around 20 minutes.
Understanding your C4 Complement results
Low C4 may reflect complement being consumed in active autoimmune disease or a persistently reduced level in hereditary angioedema, while normal or raised values are read in the context of inflammation; your doctor interprets the result with your full clinical picture. Doctor-reviewed reports arrive in 7 Days.
How to book the C4 Complement test in Dubai
- 1Book your slot
Book on the site or WhatsApp — same morning or next day. Fasting reminders included.
- 2Your nurse visits
A DHA-licensed nurse does a ~20-minute draw at your home, office or hotel. Sealed kit.
- 3Lab processes it
Most of our tests are processed at AVM Labs, Dubai, a CAP-accredited laboratory with ISO 15189 accreditation from EIAC (No. LB-MED-227).
- 4Your doctor reads it
A BestDOC doctor reviews the results, then the report lands on email + WhatsApp with notes.
Frequently Asked Questions
Anything else? Ask on WhatsApp — we usually reply in three minutes.
Results are ready within 7 Days. C4 is a specialised complement assay run at our ISO-certified partner lab, and every report is checked by a doctor before it reaches you on WhatsApp and email.
No. Food does not meaningfully change C4 levels, so you can eat and drink as normal before your appointment. Mention any current infections or medicines, since these can affect complement readings.
A low C4 can suggest active autoimmune disease such as lupus, or, if persistently low, may raise the possibility of hereditary angioedema. Only your doctor can interpret this in combination with C3, symptoms and history.
The two proteins act at different stages of the complement cascade. Comparing them helps identify which pathway is activated, which is more informative for diagnosing and monitoring immune conditions than a single value.
It can. A persistently low C4 is one of the clues doctors look for in hereditary angioedema, a condition causing recurrent swelling. Further specific tests are usually needed, and your physician will guide the next steps.
Book a home visit online in Dubai and pick a same-morning or next-day slot. The test is self-pay in AED; we do not bill insurance for at-home collections.