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Doctor insights on: Blood Pregnancy Test Positive And Urine Negative

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Is I it possible to have negative urine pregnancy test but positive blood pregnancy test. Why do the urine test keep coming out negative?

Is I it possible to have negative urine pregnancy test but positive blood pregnancy test. Why do the urine test keep coming out negative?

Sure: That often happens if a woman is testing too soon after conception. After another week, the level of bHCG should be high enough that tests will be positive on any urine test, even a urine test after she had drank a lot of water. ...Read more

Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


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What is a reason for you to have 3 positive home pregnancy tests but a. Negative blood pregnancy test?

What is a reason for you to have 3 positive home pregnancy tests but a. Negative blood pregnancy test?

Possibilities: Here are a few possibilities: 1. You are doing the home test wrong --- letting it sit too long or have expired tests 2. You miscarried between doing a home test and taking the blood test 3. There is a lab error on your blood test. Try repeating the urine now since you have had a neg blood test. If positive then repeat the blood. Blood is the more accurate test. ...Read more

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If the first one blood pregnancy test said positive and the second one said negative can I be pregnant ? Should i take another blood test ?

If the first one  blood pregnancy test said positive and the second one said negative can I be pregnant ? Should i take another blood test ?

Yes and yes.: You can get positive followed by negative if the test was done improperly or if the pregnancy failed for any reason. Should repeat the test in a few days. The chemical detected in the pregnancy test doubles every 2 days or so should be unmistakeable in another few. ...Read more

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If i took one blood pregnancy test that says positive , how can another one i took two days later say negative& I have no period am i'm pregnant ?

If i took one blood pregnancy test that says positive , how can another one i took two days later say negative& I have no period am i'm pregnant ?

Miscarriage : If you had a positive blood pregnancy test then followed by a negative blood pregnancy test then this is consistent with an early miscarriage. Some people refer to these as a chemical pregnancy. This means you were pregnant the pregnancy did not last. This is very common. If you want to be pregnant you can try again. If you are trying to avoid pregnancy at age then consider starting birth control. ...Read more

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If my blood pregnancy test said 10 and positive then when i did it again it said negative blood pregnancy test and no period can I be pregnant ?

If my blood pregnancy test said 10 and positive then when i did it again it said negative blood  pregnancy test  and no period can I be pregnant ?

Inconsistent info: It is not likely that you did the blood test. It is usaully done in a labortory, if you did a urine test and it differed from the blood test, rely on the blood test. Unless you have a period, consider yourself pregnant and seek care acoordingly for your and your baby's health. ...Read more

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I had a positive blood pregnancy test with a 10&then the day after i had cramps but no blood then my next blood test came out negative can I pregnant?

I had a positive blood pregnancy test with a 10&then the day after i had cramps but no blood then my next blood test came out negative can I pregnant?

HCG tests: Was this a lab-run test or a home test? Usually, home quantitative HCG tests are not readily available. Assuming the two test you describe we're accurate, the negative 2nd result would indicate a loss of the pregnancy. However, one or both tests could have been inaccurate. Or, you may harbor anti anti IgA heterophile antibody which can give spurious results. Check with your gynecologist to be sure. ...Read more

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I had my iud removed last week and had a positive blood pregnancy test on Monday and a negative on Thursday. Is there a chance the negative could be wrong? I feel so pregnant but not due for period for another week. What are my odds. I want to be pregnant

I had my iud removed last week and had a positive blood pregnancy test on Monday and a negative on Thursday. Is there a chance the negative could be wrong? I feel so pregnant but not due for period for another week. What are my odds. I want to be pregnant

Testing too soon: Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully. ...Read more

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I just took a blood pregnancy test yesterday. The numbers came back - 124. I'm not sure if that is negative or positive.?

I just took a blood pregnancy test yesterday.  The numbers came back - 124.  I'm not sure if that is negative or positive.?

Positive: Yes the serum pregnancy hormone level is above the positive threshold. Therefore this is an early pregnancy. This does not guarantee viability of the pregnancy. Only time will tell the future of the pregnancy. Hope this helps. ...Read more

Dr. James Dukelow
4 doctors shared insights

Pregnancy (Definition)

When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more


Dr. Stephen Sudler
482 doctors shared insights

Pregnancy Test (Definition)

A pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as ...Read more