Tetanus & Diphtheria IgG Immunity Test in California

The Tetanus & Diphtheria IgG Immunity Test measures antibodies in your blood to see if you are protected against tetanus and diphtheria. It is often ordered to check immunity after vaccination or when a booster is due.

What it measures

Tetanus IgG antibody — Shows if you have protective antibodies against tetanus.
Diphtheria IgG antibody — Shows if you have protective antibodies against diphtheria.

Who it is for

This test may be ordered by a clinician for people who are unsure about their vaccination history, before certain medical procedures, or as part of a general wellness check.

Preparation

No fasting or special preparation is needed. You can eat and drink normally before the blood draw.

Results and what they mean

Results are usually reported as protective or non-protective based on antibody levels. A clinician interprets these results in the context of your health and vaccination history. This information is not medical advice; discuss your results with a healthcare provider.

Requesting the Tetanus & Diphtheria IgG Immunity Test in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. With coastal metros, inland towns, and rural counties with very different access to testing, it pays to schedule your collection in advance.

Frequently asked questions

Do I need to fast for this test?

No, fasting is not required. You can eat and drink as usual before your blood draw.

What does a protective result mean?

It means you likely have enough antibodies to fight off tetanus or diphtheria. A non-protective result may mean you need a booster shot.

How long does it take to get results?

Results are typically available within 1 to 3 business days.

Can I get this test without a doctor's order?

In many states, you can order this test yourself. Check with the lab for specific requirements.

Tetanus & Diphtheria IgG Immunity Test by city in California

All testing in California → Full Tetanus & Diphtheria IgG Immunity Test guide →