Bleach Pregnancy Test: Procedure, Accuracy and Precautions

Bleach Pregnancy Test – Procedure, Results and Precautions

Pregnancy tests have come a long way, growing from the early days of uncertainty to today’s reliable methods. However, some people still like to explore alternative means of confirming pregnancy, such as the bleach pregnancy test. Bleach has been used in every household as a cleaning agent for kitchens and toilets. However, it can also be used for a pregnancy test at home. This home pregnancy test using bleach is known as Bleach Pregnancy Test. It is a quick and cheap alternative to a conventional pregnancy test. Let’s find out more about it.

Note: The results from the bleach powder pregnancy test are not 100 % accurate. As this test can prove to be dangerous when handled incorrectly, it is advisable that someone else perform the test for you to avoid any harm to you or the baby.

What Is a Bleaching Powder Pregnancy Test?

Bleach Pregnancy Test is an easy homemade pregnancy test using bleach as the testing indicator. Pregnancy can be easily detected without spending too much money on this method. The Bleach Pregnancy test is a good method to try as a precursor to another pregnancy test.

Bleach and pee pregnancy test is possible due to the highly reactive nature of bleach. The reaction between the bleach and urine indicates the result of this test. If the reaction produces fizz, bubble or froth, this could mean that you are pregnant. If you don’t see any visible reaction, it suggests that you are not pregnant.

Is It Safe?

Although a DIY bleach pregnancy test is cost-effective and easy to perform, it is by no means accurate as it cannot detect the pregnancy hormone. The bleach pregnancy test raises several safety concerns. Handling bleach improperly can lead to health risks. Plus, there are very limited studies on the efficacy and safety of bleach pregnancy tests. Since bleach is a corrosive chemical, it can be dangerous if it comes in contact with the skin, eyes, mouth, or throat or if someone inhales its fumes. Therefore, it is important to be highly cautious when conducting a pregnancy test and leave the room if you begin to have eye or lung irritation.

How Does It Work?

Pregnancy tests are based on the ability of a substance to identify a hormone called Human Chorionic Gonadotropin (HCG) in the urine. Your placenta starts producing HCG early when you are pregnant. The level of HCG production continues to rise each day during most of the first trimester. After crossing a certain threshold concentration, HCG starts coming out along with the urine.

The bleach and pee pregnancy test works when the bleach reacts with the pee. In the Bleach Pregnancy test, when HCG is present in urine, it reacts with bleach to produce fizz. This is an indication that HCG is present in the urine and you are pregnant.

If there is no noticeable change when urine and bleach are mixed together, then it indicates that HCG is not present in the urine and you are not pregnant.

What Will You Need to Perform the Test?

For the Bleach Pregnancy test, you will need the following items:

  • Two clean cups – Mark them as cup 1 and cup 2.
  • Standard household bleach
  • Fresh urine sample (try to conduct the test in the morning since the concentration of HCG in urine is maximum at that time)

Which Bleach to Use for This Test?

To perform the Bleach Pregnancy test, you do not require any expensive industrial bleach. You can use standard household bleach that is generally used for cleaning purposes. Try to use normal bleach rather than scented or coloured bleach, as these might disrupt the reaction between the bleach and urine.

How to Perform a Bleaching Powder Pregnancy Test?

Following are the steps to perform the Bleach Powder Pregnancy Test:

1. Prepare the Urine in Cup 1

Urinate in the cup directly. Try to fill one-fourth of the cup with urine. It is advised to perform the test in the morning since the concentration of Human Chorionic Gonadotropin (HCG) is highest at this time. Hence, it will give you better results.

2. Prepare the Bleach in Cup 2

Put some bleach into the Cup 2. There is no specified measurement for this, but it is advised to take one-fourth cup of bleach.

3. Add Your Urine to Cup 1

Pour the fresh urine sample from cup 1 to cup 2. You will be able to see the reaction immediately.

4. Observe The Reaction

After mixing, if the reaction produces fizz, bubble or froth, it could mean that you are pregnant. While if you don’t see any visible reaction, it suggests that you are not pregnant.

What If There Is No Reaction?

If you cannot see any reaction after bleach and urine is mixed, then you are not likely not to be pregnant. However, you should not conclude that you are not pregnant since the bleach and pee pregnancy test is not 100% conclusive. You should try another standard pregnancy test to find out for sure.

Test Result

The Bleach Powder Pregnancy test will need your patience for interpretation of results. Froth will be generated as soon as you add urine to bleach. You will have to be observant as the reaction lasts for a few seconds.

1. Positive Result

If the solution produces fizz, bubble or froth, this is the positive pregnancy test with bleach and urine. If the mixture foamed within a few seconds, there is a very high chance that you are pregnant. A positive bleach pregnancy test indicates that you are pregnant. However, it is not 100% accurate.

A false positive pregnancy result is when the pregnancy test shows positive, but you are not actually pregnant. If you leave the mix for too long, it will froth due to other reasons. It will be considered as a false positive pregnancy result.

2. Negative Result

If the mix doesn’t produce any frothing or effervescence, then you are not likely not to be pregnant. But this result is not 100 % conclusive. You should try another standard pregnancy test to find out for sure. A negative bleach pregnancy test suggests that you are not pregnant.

A false negative pregnancy test is when you are pregnant and the pregnancy test gives a negative result. However, a false negative pregnancy test is very uncommon. A false pregnancy result can be observed if you take a bleach pregnancy test before a missed period.

How Accurate Is the Bleach and Urine Pregnancy Test?

The pregnancy test with urine and bleach is a homemade pregnancy test. You cannot expect it to be 100% conclusive. The pregnancy test conducted by hospitals and nursing homes is far superior to bleach and urine pregnancy tests.

Why Should You Take Bleach Pregnancy Test?

Well, you should not. Experts are of the opinion that bleach pregnancy tests should be avoided because of several health hazards. Inhaling the fumes could have any serious effect on your little one or yourself if you happen to be pregnant. Plus, there are several safe-to-use at-home pregnancy tests available.

Risks of Taking Bleach Pregnancy Test at Home

Bleach and urine should be combined with utmost care. When bleach and urine are combined, a very toxic fume called chloramine gas is created that can be risky for you and your baby if you inhale even a small amount of it. Depending on the amount of chloramine gas you inhale, you could experience minor symptoms such as difficulty breathing, nausea, throat irritation and skin irritation, or you could even possibly lose consciousness if you inhale too much. Hence, it is necessary to perform this test in an open area with a lot of ventilation. Also, it is preferable that someone else perform the mixing part of the test without you in the room so that there is no risk of harm to you or the baby. All in all, if you believe you are pregnant, it is always advisable to buy a pregnancy test from a pharmacy, as it is safer and more accurate.

Does Taking Health Supplements Cause a False Result?

The FDA has approved HCG as a prescription medication for fertility treatment. You may get a false result if you get a pregnancy test after taking an approved fertility prescription drug that contains HCG.

However, if you are taking simple health supplements that do not contain Human Chorionic Gonadotropin (HCG), which is the main factor for this test, you do not have to worry about false results due to health supplements.

Another important piece of information to note here is that if the health supplement prescribed to you has a diuretic effect (which causes more urination than normal), the concentration of HCG in your urine might not be sufficient for the test, and it might produce false results.

Note:- If you drink too much water, the concentration of HCG in your urine might be lower than required for the test, and this might produce false results.

Precautions to Take While Doing the Home Pregnancy Test With Bleach

It is very important to take safety precautions while doing the Bleach Powder Pregnancy test. Here are some precautions you should take:

  • Do not directly pee inside the bleach container, as it may cause a reaction that could be dangerous.
  • Use the normal bleach rather than the scented or coloured bleach as these might disrupt the reaction between bleach and pee.
  • The fumes caused by mixing bleach and urine may cause watery eyes, nausea, suffocation and chest pain. The fumes from the bleach and pee pregnancy test can be toxic to your unborn baby if you inhale them.
  • The observation has to be made in the first few seconds. If you leave the mix for too long, it will froth due to other reasons. It will be considered as a false positive pregnancy result.
  • Ensure that the room where the testing is done has proper ventilation. Never inhale the gases that come out during the test.
  • Do not allow the bleach to come in contact with your skin. Bleach is corrosive in nature. It can cause irritation and burns.
  • Do not shake the mixture of urine and bleach. The froth seen after shaking the mixture will not be the proper indicator of pregnancy. The foam or froth might have been caused due to the stirring action.


1. Are There Any Alternatives For Bleach Pregnancy Tests?

While the bleach pregnancy test may be appealing for its simplicity, it cannot match the reliability of medical-grade tests. The best alternative to a home pregnancy test with bleach is an at-home pregnancy test kit. It is one of the reliable methods to check pregnancy without worrying about any safety hazards. Plus, it is easily available at drugstores, supermarkets, and even online at reasonable prices. You may also try a sugar pregnancy test, and for a clear confirmation, you can have a blood or urine test at the doctor’s office.

2. What Are The Safe Methods To Check Pregnancy?

Over-the-counter available at-home pregnancy tests and blood tests done at a healthcare facility are the safest methods to check pregnancy, as they do not risk the individual to any harmful substances.

The bleach powder pregnancy test can be a very useful home-based test to check pregnancy. However, the results of this test are not 100% conclusive. It is highly recommended that you get a standard pregnancy test done at a hospital for confirmed results.


1. Pregnancy Tests; Cleveland Clinic;

2. Home pregnancy tests: Can you trust the results?; Mayo Clinic;

3. Human Chorionic Gonadotropin (HCG) Test; University of Michigan Health;

4. Pregnancy Test; MedlinePlus;

5. Some Things Just Don’t Mix: Poison Control Tips For Chemicals; Missouri Poison Center;; March 2018

6. Avoid Dangerous HCG Diet Products; FDA;

Also Read:

Digital Pregnancy Test
Baking Soda Pregnancy Test
Easy Homemade Pregnancy Tests
How to Know Pregnancy Without Doing Test?

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