Learn more about you and your baby in pregnancy.

Know with one simple blood test

Watch a video to learn how UNITY Screen works.

UNITY Complete Video
Play Video about UNITY Complete Video

Watch a video to learn how UNITY Screen works.

UNITY Screen can be ordered through your healthcare provider.

Only UNITY screens your baby’s risk for these conditions without needing a paternal sample.

PLUS optional screening for fetal RhD status (for Rh negative patients) and other red blood cell antigens (for pregnant patients who are alloimmunized).

Aneuploidy screening and fetal sex is available for twin pregnancies. Fragile X carrier screening is also available as an add-on. Fetal sex is included unless opted out.


One simple test.

We sequence small fragments of DNA related to your baby that made its way from the placenta into your bloodstream. The test is safe for you and your baby as blood is drawn from your arm. 

Using BillionToOne’s proprietary Quantitative Counting Template (QCT) technology, only UNITY can assess your baby’s risk for recessively inherited conditions and your baby’s RhD status.

Ask your doctor about UNITY Screen.

Results in about 2 weeks.

In most cases, you’ll receive a reassuring, low-risk result.

If your result is high-risk, your doctor will go over the result and offer follow-up testing options.

There are many things you can do to prepare for the birth of your baby. For certain conditions, treatment may start during pregnancy or right after birth.

Traditional Carrier Screening


carrier screening


carrier screening not required

Fetal Risk

assessment included

Fetal Risk

assessment method
invasive CVS / amniocentesis

Total Time

for results
2 weeks
4-6 weeks maternal + paternal

Total Cost

single fee
multiple fees

They’re common and severe. Many are treatable.

We believe that every women should have access to the best care possible. For some conditions, prenatal and newborn interventions may have a significant impact on the baby's health outcomes:

spinal muscular atrophy

1 in 54 people are carriers

Therapies are most effective when initiated before symptoms begin, making prenatal diagnosis critical.

90% of SMA Type 1 infants die before age two, but effective gene therapies are available. Treatment starts days after birth.


sickle cell disease

1 in 8 African Americans are carriers

Cord blood banking at the time of birth may help treat the disease in the future.

We cover cord blood banking fees for ALL families with high-risk sickle-cell UNITY result


alpha thalassemia

1 in 93 Asians are carriers

Without prenatal interventions, most babies with alpha thalassemia are stillborn.

Prenatal intervention such as transfusion and in utero stem cell transplant (currently in trial) may help babies survive.


All insurances including Medicaid are accepted and financial assistance is available.

We are here for you.

Complimentary genetic counseling is available before or after taking the test. Our board-certified genetic counselors are here to guide you through the process.