+91 8013693656 newmedilifediagnosticcentre@gmail.com Diagnostic care in Kolkata
Call for current timings
Immunology & Serology Home collection available

Immunoglobulin G - IgG (IgG4)

Parameters1 tested
SampleBlood
FastingNot required
Report in24-48 hrs

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

No special preparation needed.

Medicines

Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.

Comfortable clothes

Wear a loose sleeve so the sample can be taken easily from your arm.

How it works

Book onlinePick a time slot
Home visitSealed, sterile kit
Lab testingBarcode tracked
ReportIn 24-48 hrs

About this test

IgG4 is one of the four IgG subclasses. Very high IgG4 levels are a clue to IgG4-related disease, a condition where organs like the pancreas, bile ducts and salivary glands become swollen and scarred.

Why is this test done?

  • Look for IgG4-related disease
  • Investigate swelling of pancreas, glands or bile ducts
  • Monitor response to steroid treatment

Symptoms — when should you get tested?

  • Painless swelling of salivary or tear glands
  • Jaundice without gallstones
  • Belly pain or pancreatitis
  • Swollen glands

Normal range

Adults 4 – 86 mg/dL

Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.

If your result is high

A high IgG4 supports IgG4-related disease, though it can also rise in allergy and some other conditions.

Common reasons
  • IgG4-related disease
  • Autoimmune pancreatitis
  • Allergy and asthma
  • Some parasitic infections

If your result is low

Low IgG4 is usually not significant on its own.

How is the test done?

  1. 1
    Book online

    Choose your slot for home collection or a visit to our centre.

  2. 2
    Blood sample taken

    A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.

  3. 3
    Tested in our lab

    Your barcoded sample is tested on automated machines with strict quality checks.

  4. 4
    Report on WhatsApp

    A pathologist checks the result and the report reaches you on WhatsApp and email.

Frequently asked questions

No fasting is needed for this test. You can eat and drink normally.

Your report is usually ready in 24-48 hrs after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.

Please call our team to confirm whether home sample collection is available for your location and test.

This test needs a blood sample. No special preparation needed.

You may also need

Related tests

View all