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Sex Determination by PCR

ProPath offers a convenient and affordable option to find out your baby’s sex as early as 8 weeks by asking your physician to order Sonic ProXY Fetal Sex Test. With only one tube of blood, ProPath is able to detect Y-chromosome from fetal DNA circulating in your blood using PCR technology. A result will be reported to your physician within 24 - 48 hours from time of receipt.  

How It Works

Step 1:

The Sonic ProXY Fetal Sex Test  assay uses rapid, real-time Polymerase Chain Reaction (PCR) technology to detect Y-Chromosome (male) fetal DNA circulating in the pregnant individual's blood. 

Step 2:

A single tube of blood is drawn from a pregnant individual.

Step 3:

Circulating, cell-free DNA (ccfDNA) is extracted from the sample and analyzed.

Step 4:

Sonic Healthcare's technology accurately detects the presence or absence of Y-chromosome (male) DNA, determining whether the baby is male or female.  


Request Sonic ProXY Fetal Sex Test from your provider. They will create an order and have one tube of blood collected and sent to the lab.
It’s that easy!  


ProPath will send the result to your physician to give to you. If you have any questions, call our Client Response Center (CRC) at 214.638.2000 or toll-free at 800.258.1253,
Monday – Friday, 7 AM–7 PM, Central Time.


Your doctor’s office will discuss payment options.

Disclaimer: This is a nondiagnostic prenatal sex test. Testing is performed by real-time PCR amplification and detection of Y-chromosome DNA. This test may not be accurate when fetal mosaicism occurs, or if the pregnancy is not a singleton (twins, multiples). False results can occur if you are less than 8 weeks pregnant or have a low-circulating DNA fetal fraction.