UNITY Fetal RhD™ NIPT

First-of-its-kind fetal RhD prenatal testing

Do you have an RhD-negative blood type? This can be important during pregnancy if your baby is RhD-positive. With UNITY you can find out as early as 10 weeks gestation!

Trusted by over 500,000 moms

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A pregnant mother looking at a sonogram of her baby

What is UNITY Fetal RhD NIPT?

UNITY is a blood-based prenatal test that can check your baby's D antigen status to determine if there is an incompatibility between mother and baby, with just a blood draw from mom! It can be done as early as 10 weeks, with non-invasive aneuploidy testing - a routine pregnancy test.

  • One maternal blood test gives important information about your baby's health.
  • The test is very safe and accurate, giving you peace of mind. (100% concordance with neonatal outcomes and >99.9% sensitivity and specificity in detecting fetal RhD antigen. Read the full publication in Nature's Scientific Report.)
  • You will also get access to BabyPeek, which can tell you 12 special traits your baby might have.
  • Results come back in 7-10 days.
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Know Early with One Simple Blood Test.

UNITY’s non-invasive prenatal test unlocks your baby’s RhD status as early as 10 weeks gestation. 

Why is this important?

RhD incompatibility occurs if you are RhD negative and your baby is RhD positive. This could cause a problem during pregnancy. Your body might try to protect you by making antibodies, but these could harm your baby.

Knowing your baby's RhD status early can help your doctor decide if any extra care is needed to keep both you and your baby safe. Mothers and babies with RhD incompatibility may be provided with Rh immunoglobulin (Rhlg), such as RhoGAM.

What To Expect.

See what you can expect once you and your provider decides UNITY is right for you.

Submit your sample

A single blood draw as early as 10 weeks is all it takes.

After the test

Results will be available in 7-10 days. The patient portal has several resources for you while you wait.

ADD ON

You also have the option to Add-on Babypeek™ once you’ve received your UNITY results.

Understanding your results

Our results are thoughtfully designed. They will provide a summary, detailed results, as well as next steps. Licensed genetic counselors are here to answer your questions usually within 1 business day.

A pregnant woman

Frequently Asked Questions

Explore our additional resources and find answers to common questions.

UNITY takes advantage of a pregnancy's DNA (circulating cell-free DNA, ccfDNA) floating in the maternal bloodstream to assess for genetic changes. Some of these genetic changes are extremely small - like changes to single genes that can cause recessive conditions. Some of these genetic changes involve the presence of an entire extra chromosome (aneuploidies).

Our specialized QCT technology enables us to be able to count the genetic information we see from both mom and baby in a blood sample, and determine if there are differences that could indicate a baby has a higher chance of being affected with one of these conditions.

The UNITY Fetal RhD™ test is for any mother who has an RhD-negative blood type to understand if RhD incompatibility is occurring between mother and baby. RhD incompatibility happens if you are RhD negative and your baby is RhD positive. This could cause a problem during pregnancy. Your body might try to protect you by making antibodies, but these could harm your baby.

Knowing your blood type and your baby's RhD status early can help your doctor decide if any extra care is needed to keep both you and your baby safe. Mothers and babies with RhD incompatibility may be provided with Rh immunoglobulin (Rhlg), such as RhoGAM.

UNITY offers multiple genetic insights from a single maternal blood sample. The results you receive will depend on which tests your healthcare provider orders.

UNITY Aneuploidy NIPT screens pregnancies for chromosome conditions caused by extra or missing chromosomes including trisomy 21, trisomy 18, trisomy 13, monosomy X, XXX, XXY, and XYY. UNITY Aneuploidy NIPT can also tell you the baby's gender. For twin pregnancies, you will also learn if your twins are identical or fraternal.

Depending on your clinical picture, your doctor may also order UNITY Fetal RhD NIPT for moms who have a RhD- blood type, UNITY Fetal Antigen NIPT for moms who are alloimmunized to certain antigens, and 22q11.2 microdeletion analysis.

UNITY Fetal Risk Screen determines if a pregnant person is a carrier for cystic fibrosis, spinal muscular atrophy, sickle cell disease, alpha-thalassemia, or beta-thalassemia. If you're found to be a carrier for one of these conditions, the fetal DNA will be screened to determine if there is a high-chance or a low-chance for a pregnancy to be affected with a condition. In some cases, like twin pregnancies or those achieved with an egg donor, we are not able to perform a fetal risk assessment.

Your provider may also order carrier screening for fragile X syndrome. If the mom is determined to be a carrier for this, our assay can perform cell-free DNA analysis to determine if the fetus is a male- this would put the fetus at higher risk to develop Fragile X Syndrome.

We believe every pregnant patient has the right to choose UNITY non-invasive prenatal screening.

We accept ALL insurances, including Medicaid, and are in-network with the majority of insurance plans across the United States. We recognize that every patient's insurance and financial situation is unique. We have a dedicated patient services team to support patient needs, including payment plans or financial assistance for those who qualify. If you have any questions or concerns with costs, please email us at support@unityscreen.com or call us at 650-460-2551.

Request access to learn more about how UNITY Complete can support you during this exciting time.


Possible results with UNITY Aneuploidy NIPT typically fall into low-risk fetus or high-risk fetus results.

A Low Risk Fetus result means that the chance your pregnancy is affected with the screened conditions is significantly reduced, but not eliminated.

A High-Risk Fetus result means there is an increased chance for your pregnancy to be affected with a specific condition. Confirmatory testing via chorionic villus sampling,  amniocentesis, or postnatal evaluation is recommended.

Note: this result does not guarantee a healthy child and does not eliminate the possibility of other chromosome abnormalities, birth defects, or other genetic conditions.

UNITY Fetal Risk Screen provides maternal carrier screening results (reported as a positive carrier or negative carrier). If a pregnant person is found to be a carrier, fetal testing will automatically be performed via cell-free DNA analysis. Possible results from the fetal testing can fall into decreased/low-risk categories or increased/high-risk categories.

Take The Next Step.

We are committed to making UNITY affordable and accessible to all.
We accept all insurances, including Medicaid, and we are in-network with the majority of insurance plans. Complimentary genetic counseling is available before or after taking the test. Our board-certified genetic counselors are here to guide you through the process.