Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test
Immunoglobulin G4 (IgG4) Test

Over 90k Biomarkers Tested

Immunoglobulin G4 (IgG4) Test

$45.00 AUD

Experiencing unexplained inflammation affecting multiple organs, chronic inflammatory symptoms, or suspected IgG4-related disease requiring specialized evaluation?

Investigate immune-mediated inflammation with our Immunoglobulin G4 (IgG4) test. This specialised analysis measures IgG4 levels to diagnose IgG4-related disease, assess chronic inflammatory conditions, and evaluate immune tolerance mechanisms affecting multiple organ systems.

Collection Location
Specimen Type

You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.

4k+ Collection Locations

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How It Works

Getting your health measured shouldn't be hard! We're here to help you every step of the way.

1
Order a test

Order a test

Order the private test that suits you and your goals. After ordering, you will receive your referral by email.

2
Collect the sample

Collect the sample

Attend one of our 4000+ partner collection centres throughout Australia. Search locations.

3
Receive your results

Receive your results

View all your lab results in your secure health dashboard. Easy!

Testimonials

What Our Customers Say

4.9
Average Rating
2,500+ Customers Tested
90,000+ Individual Biomarkers
A
Adam O. ACT

Simple health checks in my control

I didn't know that private blood tests were an option. Tried this platform as the packages suited what I wanted for a good price. Easy to follow instructions, and super quick results. Platform provides more information than my gp's ever have on the tests and what the results meant. Would like more clinics to be able to test at (specifically Capital Pathology) but there is a decent network. Will continue to use.

The Performance Check
C
Christopher N. NSW

Quick access to blood tests

BLOODY GOOD is a very efficient route to access blood testing for a visitor outside the Australian health system. It is quick with the necessary referral and documentation, and quick with results. Thank you

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Olga B. New South Wales

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Getting a referral was easy. Laverty pathology accepted it. Bloody Good offers an affordable and convenient way to check essential blood markers.

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Overview

The Immunoglobulin G4 (IgG4) test acts like a specialized detective for your immune system, identifying when one particular type of antibody has gone into overdrive and is causing problems throughout your body. Think of IgG4 as usually being the quiet member of your immune system's security team – normally present in small amounts but sometimes becoming overly aggressive and attacking your own organs. When IgG4 levels spike dramatically, it can lead to a condition called IgG4-related disease, where this rogue antibody creates chronic inflammation and scarring in organs like your pancreas, liver, kidneys, or salivary glands.

This test is especially valuable because IgG4-related disease is a master of disguise – it often mimics cancer or other serious conditions, leading to unnecessary worry and potentially inappropriate treatments. By measuring your IgG4 levels, doctors can distinguish between this treatable inflammatory condition and more serious diseases, giving you peace of mind and the right treatment path. The good news is that when caught early, IgG4-related disease typically responds well to treatment with medications that calm down your overactive immune system, but early detection is crucial since untreated inflammation can cause permanent organ damage over time.

Symptoms

Essential for individuals with suspected IgG4-related disease, unexplained organ inflammation, autoimmune pancreatitis, or anyone needing evaluation of chronic inflammatory conditions.

Questions

  • IgG4-related disease is a systemic inflammatory condition characterized by elevated IgG4 levels, tissue infiltration, and fibrosis that can affect multiple organs including pancreas, bile ducts, salivary glands, and kidneys.
  • Elevated IgG4 may indicate IgG4-related disease, but diagnosis requires correlation with clinical symptoms, imaging findings, and sometimes tissue biopsy, as some healthy individuals may have elevated levels.
  • Treatment typically involves corticosteroids as first-line therapy, with other immunosuppressive medications used for maintenance or in cases of steroid resistance or intolerance.
  • Yes, IgG4 can be elevated in some allergic conditions, parasitic infections, and other inflammatory diseases, which is why comprehensive evaluation is needed for accurate diagnosis.
  • IgG4 levels typically decrease with effective treatment and may be monitored along with clinical symptoms and imaging studies to assess treatment response and detect disease relapse.
  • Commonly affected organs include pancreas (autoimmune pancreatitis), bile ducts, salivary glands, kidneys, lungs, lymph nodes, and retroperitoneal tissues, though virtually any organ can be involved.

Dr. Vu Tran
Bloody Good’s Chief Medical Officer

Biomarker Tested

How to prepare

No special preparation required. Inform healthcare provider of all medications, particularly immunosuppressive drugs or corticosteroids, as these may affect IgG4 levels and treatment monitoring.

After the test

Address elevated IgG4 through comprehensive evaluation including imaging studies, possible tissue biopsy, and appropriate immunosuppressive treatment if IgG4-related disease is confirmed. Work with rheumatologists or specialists familiar with IgG4-related disease.

Your test results will be available in your private dashboard. If there are any urgent issues, we'll let you know so you can follow up with your health professional.

Understanding results

Results show IgG4 levels compared to normal ranges. Elevated levels may suggest IgG4-related disease, but diagnosis requires correlation with clinical symptoms, imaging findings, and sometimes tissue biopsy results.

Frequently Asked Questions

Most collection centres accept walk-ins. Some may require a booking - check details when you click on your chosen location.

If your test needs fasting, we’ll include that in your instructions after you order. Fasting usually means no food for 8–12 hours, but water is fine.

Just your pathology referral form (we email it to you)

Of course. Just maybe don’t bring the friend who faints at the sight of blood.

They’re the highly trained professionals who take your blood sample - with a steady hand and a sharp needle. They love blood, but don’t worry… they’re not vampires. Just legends who make blood tests quick, clean, and (almost) painless.

Some of our tests include Urine, Stool, Saliva and more. Each test will have a clear description on what sample you will need to give and instructions on how.