There is no wait longer than the wait to find out if you’re having a boy or a girl. For decades ultrasounds at roughly the half-way point in a pregnancy were the go-to method of determining your child’s gender. Sneak Peek gender tests are purporting to change all that. But is it too good to be true? Find out as we put to the test the Sneak Peek Gender accuracy.
Using A Blood Test To Predict Gender of Fetus.
Sneak Peek is not the first to enter the DNA gender prediction test market. There are many forms of the gender predictor test, the most common of which is the IV blood gender predictor test that is typically performed in a hospital setting.
The actual testing phase of the process is the same for Sneak peek gender tests and the hospital blood test for gender prediction.
Where Sneak Peek differs is in that they are offering a baby gender predictor test kit that can be bought online and used in the comfort of your home.
How Does The Sneak Peek Test Work?
When a woman is carrying a child, their bodies are connected biologically. Because of this a mother will often times have her child’s DNA circulating in trace amounts through her bloodstream.
This is called “cell-free fetal DNA.” It can be found in detectable amounts as early as 7 weeks into a pregnancy.
Sneak Peek runs tests on mother’s blood to determine whether or not the Cell-Free Fetal DNA circulating in her bloodstream is male or female in nature.
How Accurate is the Sneak Peek Test?
In a meta-analysis of 41 studies conducted by the Department of Obstetrics and Gynecology at the Third Military Medical University in China, researchers found an overall accuracy rate of between 98-100% with accuracy climbing during the first trimester and dropping in subsequent trimesters.
This was a study on the overall process of cell-free DNA testing, and not specifically on Sneak Peek’s capillary blood testing method.
For a more specific look we can turn to a study conducted by the American Society for Human Genetics, which found that the capillary blood testing technique employed at Sneak Peek was:
- 100% Sensitive.
- 96% Specific
- 98% Accurate.
Out of 153 samples studied there were only 2 false positives and no false negatives (Meaning, only two girls identified as boys and no boys identified as girls.).
This would indicate that the technique is quite accurate, and that if the test identifies you are going to have a girl it is likely even more accurate.
Sneak Peek has a few more studies listed on their website if you want to have a read. They all support Sneak Peek Gender accuracy.
Class Action Lawsuit Against Sneak Peek.
There is currently a lawsuit pending against Sneak Peek. In the lawsuit it is alleged that their claim of 99% accuracy is not correct.
It’s difficult to disprove the accuracy of a test by presenting plaintiffs who have found the test inaccurate– after all, 99% is not 100% and so it should be expected that some women will not receive accurate results. However, the science on this test is conclusive: It really is as accurate as reported.
The other confounding factor is the sensitivity of DNA tests. Sneak Peek warns that all care should be taken to ensure the integrity of the test. This means no men should handle the test in any way. Even the tiniest microscopic bit of male DNA could throw a false positive. This would explain why a test could be 99% accurate in laboratory settings and then fall to a purported 60% accuracy when used by untrained laypeople at home.
Sneak Peek Gender Accuracy.
Look around the internet and you’ll find a lot of stories of Sneak Peek working and just as many of it failing. Anecdotes != evidence, but one might expect less noise surrounding a 99% accurate product. Then again, it could be a case where only the unhappy customers are talking about it.
While the jury is still out on the lawsuit and anecdotes flurry on both sides, we can only go by the science, and in the case of Sneak Peek the science is strong: Sneak Peek is an accurate early gender testing method.
What Are Your Results?
Let us know in the comments or email us with the results and we’ll post updates as we gather the data.