The baking soda gender test has become a staple in the world of at-home gender prediction methods. Relying on the principle that a pregnant woman’s urine pH may vary based on the baby’s sex, this method has garnered attention for its simplicity and the allure of early prediction.

It’s essential to note that scientific backing for this test is minimal and factors other than the baby’s sex can influence urine pH (ACOG, Healthline).

The Test’s Popularity

The baking soda gender test’s widespread appeal lies in its ease of use and the readily available materials it requires. It’s an attractive option for expectant mothers eager to predict their baby’s gender, especially in the early stages of pregnancy.

Most mothers report that testing before 10 weeks can provide inconsistent results and it seems that the peak for accuracy, or at least consistency, is between 10-12 weeks of pregnancy.

Materials Needed

  • Baking soda
  • Three disposable plastic cups
  • First morning urine sample

How to Conduct the Test

  1. Place 2 tablespoons of baking soda into two separate cups.
  2. Collect a first morning urine sample in the third cup.
  3. Gently pour the urine into the cups containing baking soda, ensuring it covers the powder.
  4. Observe the reaction:
    1. Fizzing suggests the possibility of a boy.
    2. No reaction leans towards a girl.

Evaluating the Results

While it’s exciting to speculate based on the test’s outcome, it’s important to treat the results as a fun guess rather than a definitive answer. The baking soda test’s accuracy is not scientifically verified, and various factors like diet and overall health can affect urine pH, irrespective of the baby’s gender (Healthline).

Scientific Perspective

Scientifically, there’s no evidence to support that a woman’s urine pH can reliably indicate the sex of her unborn child. Several studies have dismissed the pH level of urine as a predictor of fetal sex, highlighting the need for accurate and medically approved methods for gender determination.

The baking soda gender test remains a popular, easy, and harmless way to guess your baby’s sex. But for parents-to-be seeking certainty, medical methods like ultrasound, endorsed by organizations such as the March of Dimes, provide reliable and scientifically sound alternatives.


  1. American College of Obstetricians and Gynecologists. (2023, October 11). Gender prediction. Retrieved November 30, 2023, from
  2. Mayo Clinic. (2023, July 11). Fetal gender determination. Retrieved November 30, 2023, from
  3. Healthline. (2023, October 4). Gender prediction tests: How accurate are they? Retrieved November 30, 2023, from
  4. Morris, S. A., & Wapner, R. J. (2016). Gender prediction methods: A review of the medical and scientific literature. Journal of Perinatal Medicine, 44(6), 621-627.


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