Are Pink or Blue Dye Pregnancy Tests Better?

Updated on January 31, 2018

Negative Pink Dye Pregnancy Test

Types Of Blue and Pink Dye Pregnancy Tests

Pink Dye Pregnancy Tests

  • Answer Pregnancy Test
  • Asada Pregnancy Test
  • Boots Pregnancy Test
  • Equate pregnancy test
  • First Response Early Result Pregnancy Test
  • First Signal Pregnancy Test
  • FirstVue Pregnancy Test
  • New Choice (Dollar Store)
  • Predictor
  • Pregnosis Clear
  • Pro Care (Dollarama)
  • U-Check
  • Wondfo

Blue Dye Pregnancy Tests

  • Clear Blue Easy Pregnancy Test
  • Clear Blue Plus Pregnancy Test
  • Crystal Clear Pregnancy Test
  • Error Proof Test (E.P.T)
  • Fact Plus Pro Pregnancy Test

Buying A Pregnancy Test

Buying a pregnancy test can be a very exciting and/or nerve wracking moment in one's life. While your emotions are running high you visit your closest store to purchase a pregnancy test only to be faced with a whole whack load of decisions.

Isn't a pregnancy a pregnancy test? Is there really a difference? The answer is, yes. There is a difference between all of these pregnancy tests on the shelves. And I am not just talking brands, price or even about sensitivity. But the colour of dye in your pregnancy test can actually make a huge difference.

So which colour dye test should you purchase?

Positive Pink Dye Test


Postive Blue Dye Test


A Line Is A Line?

Just a quick Google search and you can easily see that the majority of people are opting for the pink dye pregnancy tests over the blue dye pregnancy tests. But why? What's the difference?

Yes, it is true that a line is a line on a pregnancy test. No matter how dark, light, thick, thin. A second line means that you are, in fact, 100% pregnant! Wrong! While some of us are veteran's at trying to conceive and know the ins and outs. Some people may not be as familiar with this type of stuff. So why isn't a line and line on a pregnancy test?

The answer to this question is evaporation lines. What is an evaporation line you ask...

Evaporation Line: An evaporation line on a pregnancy test is a line caused by the evaporation of urine on the test area causing a false positive result. An evaporation line may be caused by waiting too long and reading the result after the time limit. Although the time limit is usually the culprit for creating an evaporation line it is not always the cause and an evaporation line may develop even within the time limit.

So, a line is a line, is a line, and I am pregnant? Or is a line an evaporation line and I am not pregnant? Hmm, kind of confused here.

So how do you tell if it's an evaporation line or a real line? First of all, you can use pink dye pregnancy tests rather than blue dye pregnancy tests. The blue dye tests have been known to be more likely to give you an evaporation line than the pink dye tests.

You can also only read the result within the time limit! Each brand on pregnancy test should indicate on the box when the test results should be read. It is usually somewhere under 10 minutes. Reading the result after this time frame allows the urine time to evaporate on the test resulting in, yes you guessed it, an evaporation line!

Study the line closely. Does it have color to it? Or is it more of a grey, a white or an indent. A positive pregnancy test result should be pink (or blue) just like the control line. It should also run from the top of the test window to the bottom of the test window. And have the same thickness as the control line. So basically the test time needs to look like the control line but it does not need to be as dark as the control line.

Another tip to avoid the dreaded evaporation line is to dispose of any damaged or expired tests. They cannot be trusted!

Have You Ever Had An Evaporation Line Before?

See results

Blue Dye Pregnancy Test vs. Pink Dye Pregnancy Test

So which pregnancy test should you buy on your trip to the store? The pink dye pregnancy test or the blue dye pregnancy test... my vote is pink!

Why should you buy the pink dye pregnancy test? What if the blue dye tests are cheaper!? You should purchase the pink dye tests over the blue dyes because......

  • Less likely to have an evaporation line. Which whether or not you are hoping for a positive can be upsetting!
  • Pink lines are usually easier to see when testing early compared to the blue lines.
  • First Response pregnancy tests are often referred to the best pregnancy tests you can buy (at a price of course). First response pregnancy tests are in fact pink dye tests!

Whichever test you buy, the choice is of course yours. But my advice would be to purchase a pink dye pregnancy test. Whether it's the expensive first response pregnancy tests. Or the cheaper dollar store tests. I feel that with the pink dye tests you will receive a more accurate result!

This content is accurate and true to the best of the author’s knowledge and does not substitute for diagnosis, prognosis, treatment, prescription, and/or dietary advice from a licensed health professional. Drugs, supplements, and natural remedies may have dangerous side effects. If pregnant or nursing, consult with a qualified provider on an individual basis. Seek immediate help if you are experiencing a medical emergency.

Questions & Answers

  • How do I know if I'm pregnant because my pregnancy test had a two-line, and different colors? The first line was color pink and the color of the below line is a blue blur.

    Try reading the instructions on the package again. It depends on the brand.


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    • profile image


      2 months ago

      Hi I'm i try pregnancy test result is one line is white and one line is red i ask this is a negative or positive??

    • profile image

      Shaterrica Johnson 

      7 months ago

      I see one line and you can barely see that Other line

    • profile image


      19 months ago

      Sorry typo 17th of May

    • profile image


      19 months ago 15 days late got my period on the 8th of May..Stopped birth control on the 10th May with diarrhea. On 17th of June spotting 2 days light red and brown and pulling cramping on right lower abdominal..did a test 22nd of June blue dye negative result 2x

    • blairtracy profile imageAUTHOR

      Tracy B 

      19 months ago from Canada

      A false negative is more likely than a false positive. With that being said, the blue dye tests are more likely to give you an evap. line. I hope you got it figured out and got the answer you are wanting.

    • profile image


      19 months ago

      So I got a clear blue positive on a blue dye but a negative on a pink dye. Still early my period is not for two days? What do you think? Pregnant or no?

    • blairtracy profile imageAUTHOR

      Tracy B 

      5 years ago from Canada

      Thank-you! You learn a lot about pregnancy tests while trying to concieve!

    • DDE profile image

      Devika Primić 

      5 years ago from Dubrovnik, Croatia

      Informative and so interesting about these tests. It would be useful for someone planning on a pregnancy.


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