Immunity Detection & Titer Testing
Immunity Detection & Titer Testing can be requested without a referral, and this overview covers what to expect. Immunity detection and titer testing is a blood test that checks whether you have antibodies against specific infections or vaccines. It helps determine if you are protected or need a booster, often for school, work, or travel requirements.
- Sample type
- blood
- Category
- General Wellness
- Turnaround
- 1-3 business days
- Price
- $119
- Referral
- Not required
Immunity detection and titer testing is a blood test that checks whether you have antibodies against specific infections or vaccines. It helps determine if you are protected or need a booster, often for school, work, or travel requirements.
What it measures
- Antibody levels (titers) — Measures the amount of antibodies against a specific disease, such as measles or hepatitis B.
- Immune status (positive/negative) — Indicates whether you likely have protection based on a threshold set by the lab.
- IgG antibodies — Shows past infection or vaccination, as these antibodies develop over time.
- IgM antibodies — Suggests a recent or current infection, but is not always included.
Who it is for
This test is often ordered by employers, schools, or travel clinics to verify immunity. A healthcare provider may also order it if you are unsure about your vaccination history.
Preparation
No fasting is required. Tell your provider about any medications or conditions that affect your immune system.
Results and what they mean
Results are reported as positive or negative, or as a number with a reference range. A clinician interprets these results in the context of your health and vaccination history. This is general information, not medical advice.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the immunity detection & titer testing is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast for this test?
No, fasting is not required. You can eat and drink normally before your blood draw.
What does a positive result mean?
A positive result usually means you have antibodies that suggest protection, but your provider will explain what it means for you.
Can I get this test without a doctor's order?
Some labs offer it directly, but a clinician should interpret the results and advise on any needed vaccines.
How long does it take to get results?
Results are typically available in 1 to 3 business days.