Autoimmune - Bloody Good
Immune System Health

Immunoglobulin M (IgM) Test

Detect early immune responses with our Immunoglobulin M (IgM) Test. This important analysis measures IgM levels to identify recent infections, assess primary immune function, and evaluate your body's first-line antibody response to pathogens and immune challenges.

Doctor Reviewed

Personalised Reports

Early Detection

Skip to product information
Immunoglobulin M (IgM) Test

Experiencing suspected recent infections, recurrent illness, or want assessment of your immune function and ability to respond to new infections?

Overview

Think of the Immunoglobulin M (IgM) test as a way to check on your body's immune system "first responders" – the antibodies that spring into action the moment they detect a new threat. IgM antibodies are like your body's security guards, patrolling constantly and sounding the alarm when they encounter bacteria, viruses, or other invaders. These antibodies are the largest and fastest-acting members of your immune defense team, typically appearing within days of an infection and working to neutralize threats while your body develops more specialized, longer-lasting defenses.

This test measures your IgM levels to reveal how well your immune system responds to new challenges and whether recent infections might be present. High IgM levels often signal that your body is actively fighting off an infection or dealing with an autoimmune condition, while low levels might indicate your immune system isn't functioning at full strength, potentially leaving you more vulnerable to getting sick. The IgM test is particularly valuable because it can detect infections in their early stages when other tests might miss them, helping you and your healthcare provider understand your current immune status and catch health issues before they become more serious.

Reviewed by Dr. Vu Tran
Bloody Good’s Chief Medical Officer

Symptoms

You may benefit from this test if you experience:
Frequent infections (more than 4 colds per year) Infections that are severe or long-lasting Annual physical exam

Purpose

Essential for individuals with suspected acute infections, recurrent infections, immune deficiency concerns, or anyone needing assessment of primary immune response function.

How to prepare

No special preparation required. Inform healthcare provider of recent infections, vaccinations, or medications that might affect immune function, as these can influence IgM levels and interpretation.

Understanding results

Results show IgM levels compared to age-appropriate normal ranges. Elevated levels may indicate recent infection or immune activation, while low levels may suggest immune deficiency requiring further evaluation.

After the test

Address abnormal IgM levels through appropriate medical evaluation, infection treatment if indicated, immune system support, or further immunological testing. Work with immunologists or infectious disease specialists for comprehensive assessment.

Frequently Asked Questions

  • Elevated IgM typically indicates recent infection, active immune response, or certain autoimmune conditions, suggesting your immune system is currently responding to a pathogen or immune challenge.
  • Low IgM may indicate immune deficiency, chronic illness, certain medications, or problems with B-cell function that could increase susceptibility to infections and require further evaluation.
  • IgM is the first antibody produced during infection and indicates recent or acute infection, while IgG develops later and indicates past infection or long-term immunity.
  • Yes, IgM can be elevated in autoimmune conditions, liver disease, chronic inflammatory states, or certain cancers affecting the immune system, requiring clinical correlation for interpretation.
  • IgM levels can rise within days of infection and typically peak within 1-2 weeks, then decline as IgG antibodies take over, making timing important for interpretation.
  • IgM deficiency can result from primary immunodeficiency disorders, certain medications, chronic diseases, or conditions affecting B-cell production and function.
Immunoglobulin M (IgM) Test

BOOK YOUR TEST

Includes Biomarker:

30 Day Money Back Guarantee

How it works

What to expect

We want you to feel bloody good—inside and out. Regular testing isn’t just about checking your current health; it helps you spot abnormal values you might not know about.

1

Book your referral

Choose the testing that suits your goals. After ordering, you will receive your referral by email.

2

Collect your sample

Easy sample collection at one of our 4000+ partner collection centres throughout Australia. Find nearest

3
Receive your results

Receive your results

View your lab results and receive a personalised review from the secure Bloody Good platform.

Before vs. Bloody Good

Start tracking your health with real data.

Order online in minutes and get clear doctor‑reviewed results in your private dashboard.

Old Way

Traditional System

  • Confusing reports and medical jargon in a PDF (if you're lucky to get a report)
  • One‑off results — no trend tracking or context
  • Hidden costs and long clinic queues
  • Waiting days for simple answers
  • No proactive insights to prevent issues

The Bloody Good Way

Cheeky brand. Serious health results.

  • 4000+ collection centres throughout Australia or book a home visit
  • Results in ~48 hours for most tests, reviewed by a doctor
  • Clear explanations in your private dashboard — not jargon
  • Track biomarkers over time with personalised recommendations
  • Up‑front pricing. No surprises. Start today.

Take a deep dive into your health

Our comprehensive health checkups test everything you need to know about your body.

See the range

Heart Health

12 tests

Cardiovascular markers and risk assessment

Liver Function

8 tests

Liver enzymes and detoxification markers

Blood Tests

25 tests

Complete blood count, lipid panel, and more

Kidney Health

6 tests

Kidney function and filtration tests

Thyroid Panel

5 tests

Complete thyroid function assessment

Vitamins & Minerals

15 tests

Essential nutrient levels and deficiencies

Hormones

10 tests

Hormone balance and endocrine function

Bone Health

4 tests

Bone density and calcium metabolism