Lab test

Measles Immunity Test – IgG Titer Test

Measles Immunity Test – IgG Titer Test can be ordered without a referral, and this guide covers what to expect. The Measles Immunity Test checks for IgG antibodies to determine immunity to the measles virus.

Sample typeBlood draw at a collection lab

ReferralNo referral required

What this test is

The Measles Immunity Test is a blood test that detects IgG antibodies against the Rubeola virus, which causes measles. Presence of these antibodies typically indicates immunity, either from vaccination or past infection.

What it measures

IgG antibodies — reflects immunity to measles

What the test involves

The test involves a standard blood draw, where a healthcare professional collects a sample from a vein in your arm.

Why it is often ordered

Clinicians generally order this test to assess immunity to measles, especially before travel or during outbreaks. It can also be used to verify vaccination status.

Preparation

Preparation for the test may vary, so it's important to follow the specific instructions provided by the laboratory conducting the test.

How results are reported

Results indicate whether IgG antibodies are present, suggesting immunity. Reference ranges and interpretation can vary between laboratories.

Before you go

Check if fasting is required
Verify test availability
Confirm turnaround time

FAQ

Frequently asked questions

What does a positive result mean?

A positive result generally indicates immunity to measles, either from vaccination or past infection.

Can I take this test if I am pregnant?

Consult your healthcare provider for advice on testing during pregnancy, as they can provide guidance based on your health needs.

Is fasting required before the test?

Fasting is not typically required, but follow any specific instructions from the laboratory conducting the test.

How soon will I get my results?

Results are usually available within 1-3 business days, but turnaround times can vary depending on the laboratory.

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