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Doctor insights on: Do You Need To Be Fasting For A Blood Pregnancy Test

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Dr. Al Hegab
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 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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When is a blood pregnancy test accurate?

When is a blood pregnancy test accurate?

About 8 days after: Blood HCG tests detect levels very soon after embryo implantation starts. The embryo usually start implanting at about 7 days after conception. So a day later blood HCG levels will start to go up. Urine tests usually turn positive at 10 days after conception. They are slightly less sensitive than blood tests. ...Read more

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How quickly does a blood pregnancy test work?

Around menses time: A blood pregnancy test will be accurate about 12 days after ovulation, which is usually just prior to your expected menses. By the time of your expected period a pregnancy test should be accurate. ...Read more

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How early can you take a blood pregnancy test?

How early can you take a blood pregnancy test?

More reliable if...: A urine pregnancy test can be taken any time, but it gives a reliable result about 3 weeks after sex (when conception might have occurred), or 1 week after missing a period. ...Read more

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How long before i can take a blood pregnancy test?

How long before i can take a blood pregnancy test?

Around menses time: A blood pregnancy test will be accurate around 12 days after ovulation, which is usually just prior to expected menses. Generally by the time of your expected period a pregnancy test will be accurate. ...Read more

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Please tell me, could a blood pregnancy test be wrong?

Yes, sort of: A blood or urine pregnancy test detects HCG hormone, not pregnancy per se. If a person has a tumor producing HCG the test will be positive but wrong in that the person is not pregnant. If you do the test too early and it is negative, it could be construed to be wrong as the women is pregnant but the fetus has not yet made enough hcg. ...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