Preterm Birth Happens at Low Risk, Too
1 in 10 babies are born too early. Half of them in seemingly low-risk pregnancies. Preterm birth is the leading cause of NICU stays and infant mortality in the U.S. Many women who experience a preterm birth had no prior risk factors or underlying conditions. No warning signs. Today’s standard prenatal care may not detect your risk for preterm birth (delivery before 37 weeks) before symptoms appear.
Today’s standard prenatal care may not detect your risk for preterm birth (delivery before 37 weeks) before symptoms appear.
Every day counts
The last weeks of pregnancy matter more than most realize.
Babies born even a few weeks early can face significant challenges with breathing, feeding, temperature regulation, and long-term development.
The impact doesn’t stop at the hospital: preterm birth can carry long-term emotional and financial weight for families, too.
PreTRM® determines your individual risk for preterm birth.
The PreTRM® test is a simple finger prick blood test, taken between weeks 18 and 20 of pregnancy, that measures proteins in your blood associated with preterm birth. The result gives you and your provider something that hasn’t existed before: your personal risk of preterm birth for this pregnancy, information that you can use together to lower the chances of an unexpected early delivery.
Start a conversation
Work with your doctor to reduce your chances of preterm birth
Your doctor is your best resource to raise questions about preterm birth, understand your own risk factors, and decide whether the PreTRM test is right for you. Our discussion guide can help you start that conversation with confidence. It covers what the PreTRM Test is, how to ask about it, and what to expect from the process.
Get the Discussion Guide
Download it, print it out, save it to your phone, or text it to yourself before your next appointment to start the conversation with your provider.
Coverage & cost
We believe every pregnant woman should have access to this information.
Sera is actively working with private and government insurance programs to expand coverage for the PreTRM test. If your insurance doesn’t cover the test, financial assistance is available if you are eligible. In addition, interest-free monthly payment plans are available for any out-of-pocket costs.
Ask your health plan to cover PreTRM®
Coverage is expanding and your voice makes a difference. Download the template letter and send it to your insurer or state Medicaid agency — it takes just a few minutes and helps expand access for pregnant women everywhere.r pregnant women everywhere.
Ready to find out whether you’re at risk for preterm birth?
Skip the wait until your next doctor’s appointment and request the test today .
It just takes a few minutes. You can request the test online and we’ll ship a kit directly to your home, with everything you need for your simple finger prick blood collection, return label included.
1. Talk to your doctor or request the test online.
2. Take a finger prick blood test between weeks 18–20 of pregnancy.
3. Receive information on your individual risk and guidance on next steps.
Is PreTRM right for me?
Most women in early pregnancy qualify.
The PreTRM Test is right for you if:
- You are no further than 20 weeks into the pregnancy
- You are carrying one baby
- You are not currently showing signs of preterm labor
- You are not on progesterone therapy after the first trimester
What moms are saying about PreTRM
Want to learn more?
Learn more
How Can I Get the PreTRM Test?
Request the PreTRM® Test
There are two ways to get PreTRM. You can request the test from your current healthcare provider or you can request the test online.

