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Sneak Peek DNA Blood Test

What is Sneak Peek® Clinical? 

SneakPeek Clinical is an early gender DNA test. It can be done starting at 9 weeks of pregnancy. The genetic test gives you the first step to connect with your baby before you see the exciting images from your ultrasound scans. The service includes an on-site phlebotomist that draws a blood sample in the comfort of the ultrasound studio. The blood sample is sent to the SneakPeek Labs for processing. The laboratories offer the fastest turnaround times in the industry, with a choice of receiving your result the same day the sample reaches the lab.

How does SneakPeek® work?

SneakPeek utilizes the shared fetal DNA circulating inside the mother’s bloodstream. Our PCR technology has the ability to detect the presence or absence of male Y chromosome in the blood sample. If it is detected, then the baby’s gender is male and if it is not detected then the baby’s gender is female. 

SneakPeek Clinical Accuracy Studies 

Multicenter blinded study of Sneak Peek® Early Gender Test

Conducted at 4 ultrasound clinics in 2015.

This study assessed the clinical performance of SneakPeek® Early Gender Test (Gateway Genomics) for noninvasive prenatal testing (NIPT) of fetal sex. A multicenter-blinded study was conducted at four ultrasound clinics. The study collected blood samples from pregnant women between 9 and 35 weeks of gestation. Circulating cell-free DNA was isolated from a micro-volume of maternal plasma and real-time quantitative PCR was performed to detect fetal DNA using a multi-copy sequence on the Y chromosome. An autosomal control gene was used to measure total cell-free DNA (maternal and fetal cfDNA). Sixty maternal plasma samples were tested twice, on different days, to assess the precision of SneakPeek.

Cell-free DNA was detected in all maternal blood samples. Y-chromosome DNA was detected in all samples from women carrying a male fetus. SneakPeek correctly identified fetal sex in all samples. Precision data showed minimal variation and high reproducibility of results. Fetal sex for all samples was unknown prior to genetic testing and was confirmed via sonographic evaluation at the end of the study. SneakPeek accuracy, sensitivity and specificity were each 100% for fetal sex identification. This study showed that SneakPeek Early Gender Test is highly accurate for fetal sex determination in early pregnancy.