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Doctor insights on: Can A Dna Test Be Done While Pregnant

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Can a blood pregnancy test be wrong if done too early?

Can a blood pregnancy test be wrong if done too early?

Yes: Beta HCG is measured in both blood and urine and is usually detected between 6-12 days after fertilization when implantation occurs. A quantitative bhcg can measure very low levels of bhcg but the typical qualitative blood test usually turns positive at a higher level and is not always better than the urine test. So to be sure you might want to retest some days later. ...Read more

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Dr. Arthur Balin
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


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Can someone be pregnant after a negative home pregnancy test and a negative pee test from the clinic? Should they take another test?

Can someone be pregnant after a negative home pregnancy test and a negative pee test from the clinic? Should they take another test?

Trust the test: Home pregnancy tests are very accurate. They are the same tests used in a doctor's office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection. ...Read more

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Can a pregnancy test be wrong?

Can a pregnancy test be wrong?

Any test can be: Wrong. However, if done correctly and after about a week past a missed period, these tests are generally accurate. ...Read more

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When can an X-ray be done on a pregnant woman?

When can an X-ray be done on a pregnant woman?

When required : If the benefits of having the x-ray outweigh the risks to the fetus then an x-ray should be done. X=rays are often required to aid in proper diagnosis under potentially life-threatening situations. In these types of scenarios it is acceptable to take x-rays on a pregnant woman. ...Read more

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If a qualitative blood pregnancy test is done three weeks after a sexual encounter and done correctly can you trust the results if they are negative?

If a qualitative blood pregnancy test is done three weeks after a sexual encounter and done correctly can you trust the results if they are negative?

Depends on cycles: Depends on how regular (or not) your menstrual cycles are. Pregnancy tests are reliable a few days before the expected period, so you could do one then. If you have no idea when your next period will be, then testing about 3 weeks after intercourse would be a good guess. Hopes this helps. ...Read more

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Can a pregnancy test ever read positive and you not be pregnant?

Can a pregnancy test ever read positive and you not be pregnant?

Pregnancy: Not likely. Make sure you see a doctor. However, yes there cases where the HCG level (pregnancy hormone) is elevated when you are not pregnant. ...Read more

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Can a blood pregnancy test be wrong?

Can a blood pregnancy test be wrong?

Only if: the test is done too early, or (obviously) if the test is defective or run incorrectly. ...Read more

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What can cause a false positive pregnancy test? Is it possible to not be far enough along for a blood test to detect pregnancy?

What can cause a false positive pregnancy test? Is it possible to not be far enough along for a blood test to detect pregnancy?

Tumor and yes: Early menopause may raise serum betahcg levels enough to give a false positive, some tumors and molar pregnancy produce beta HCG and will give a positive test. Yes, you may be too early in pregnancy to have a positive blood test. If you think you are pregnant, you may wish to repeat the tests in a week. ...Read more

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Blood test for pregnancy came out positive. Is it 100% accurate? Will i see a baby during ultrasound? Can blood test be false?

Blood test for pregnancy came out positive. Is it 100% accurate? Will i see a baby during ultrasound? Can blood test be false?

Ultrasound to: Confirm pregnancy. Depending on how far along the pregnancy is, you may or may not see a baby per se, but ultrasound will confirm pregnancy by showing the gestational sack and related structures. The blood test is nearly 100% accurate. ...Read more

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How early can pregnancy strip reliably be used for testing if I am pregnant.

How early can pregnancy strip reliably be used for testing if I am pregnant.

Very sensitive: Most home urine pregnancy tests when used according to manufacturers' instructions, can detect pregnancy within 3-4 days after implantation and by 7 days of implantation in 98% of cases. When pregnancy occurs, the female body starts creating a hormone called human chorionic gonadotropin (hCG) in higher amounts during the early stages of pregnancy. That is what is detected with the urine tests. ...Read more

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Can someone still get a positive pregnancy test after a tubal liguation. How long after can they test to have a positive test.

Can someone still get a positive pregnancy test after a tubal liguation. How long after can they test to have a positive test.

Tubals can fail: Just like after a vasectomy, failure rates are less than 1% but still can occur at any time. A pregnancy test will turn positive about two weeks after actual conception. ...Read more

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Could it be okay to retake a tuberculosis test after testing positive?

Could it be okay to retake a tuberculosis test after testing positive?

Generally not: If you are speaking of the skin test the answer is no, as it usually remains positive for years and years even after successful treatment. There is a blood test for latent (silent) TB that can be repeated following initial, successful treatment. ...Read more

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I've been taking ovulation test strips, which became positive on May 8. I got a positive pregnancy test may 12. How can it be positive so soon?

I've been taking ovulation test strips, which became positive on May 8. I got a positive pregnancy test may 12. How can it be positive  so soon?

Not likely: 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. Please seek care from a doctor to protect your and your baby's health. ...Read more

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Is there a paternity test that can be performed prenatally?

Is there a paternity test that can be performed prenatally?

Yes: There is a non-invasive paternity blood test that analyizes fetal dna circulating in the mother’s blood. The baby’s dna is then compared to the dna taken (by buccal swab) from the potential father. This test can be performed as early as 10 weeks into the pregnancy. I highly recommend labtest md for testing. They have several locations. www.labtestmd.com. ...Read more

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Dna (Definition)

Dna are the coding molecules found in all living things on earth which contain the instructions on how to build living things. Its is comprised the nucleotide molecules which are ...Read more