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I'm not sure what brand of test you used but I used First Response and it says in the pamphlet "The test result should be read as soon as possible after waiting the 3 minutes. A positive result will last for at least 48 hours. A negative result should not be read after 10 minutes." I'm guessing that the hormones dry up along with the urine so the test is not longer able to detect it.

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โˆ™ 2009-04-06 19:32:12
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Q: Why would a home pregnancy test show up positive and the two days later show up negative?
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Related questions

When you do the pregnancy test how would you know if its positive or negative?

you would know by looking in the bubble on the stick and there is a - and a + if you get the + you are pregnant if you get the - you are not


Why would 1 pregnancy test say positive and 1 say negative?

Because the one that says positive is more sensitive and can detect the pregnancy hormone sooner.


When subtracting a negative and a positive your answer would be a positive?

If you are subtracting the negative from the positive, the answer will be positive. If you are subtracting the positive from the negative, the answer will be negative.


If a is a negative number what would -a be?

If a i positive, -a is negative; if a is negative, -a is positive.


When you multiply a positive number by a negative by a negative one what is the sign of the answer?

A negative times a positive is a negative and that negative times a negative would = a positive. So the answer would be a positive number. *<:)


Would a positive multiplied by a negative be a positive?

No. A positive times a negative is always negative. A negative times a negative is always a positive.


Do a pregnancy test first and its saying positive and the others are saying negative?

If it doesn't give you a positive answer the best would be going to the doctor and get tested there.


Is a negative a positive is what?

A Negative plus a positive = a negative because negative and a positive cannot work together Negative + Negative= Positive Positive + Positive = Positive when your dealing with numbers such as : -2 + 2 would equal a negative 4 -2 +-2 would equal a positive 4


Why would a home pregnancy test show up negative and a day later show up positive?

On the box it will tell you at how many days it will detect pregnancy. You were probably right at the line on the first day, and the second your body had produced enough of the hormones to show up positive on a titer test.


What would be the answer to positive 3 times negative 4?

A positive times a negative is negative, so positive 3 times negative 4 would be negative 12.


What is 6 plus negative 1?

6 + (-1) positive and negative will equal negative. so it's 6-1 that would equal 5. positive and positive= positive positive negative= negative negative negative = positive negative positive= negative


Had heavy period and a week later tested positive for pregnancy?

That "heavy period" could have been implantation bleeding if you have tested positive for pregnancy. I would suggest taking another test to confirm.

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