Question 1

how do pregnancy tests work?

Accepted Answer

Measure hormones: Pregnancy tests measure the level of a hormone called human Chorionic Gonadotropin (hcg), which begins to be produced when the fertilized egg implants into the uterine wall.  This hormone can be measured in urine or in the blood.  The blood test is the more accurate of the two methods.

Question 2

do homemade pregnancy tests work?

Accepted Answer

No: One can buy a urine pregnancy test at the store. It will give a reliable result, if the test is done correctly, 1 week after missing a period, or 3 weeks after sex (when conception might have occurred). If a woman's normal regular period happens, then she is not pregnant at that time, and doesn't need to do a pregnancy test at that time.

Question 3

can the home pregnancy tests always work?

Accepted Answer

No: Not quite as sensitive as blood pregnancy tests.  If you've had unprotected sex and a missed period, see your dr.  Also other causes of missed periods like hormone imbalance.

Question 4

do home pregnancy tests work for all women?

Accepted Answer

Yes they should.: Most tests claim they are sensitive enough to be positive as early as first day of missed period, but waiting for a week would give you more reliable results.

Question 5

how well do the first response pregnancy tests work ?

Accepted Answer

Home Pregnancy Test: They are very accurate.  They are the same type of tests that are used in the doctors office

Question 6

do home pregnancy tests work correctly for 10 - 15 weeks of pregnancy ?

Accepted Answer

By 3 weeks after sex: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon.

Question 7

is it possible for pregnancy tests to not work on someone even if they are pregnant?

Accepted Answer

Pregnancy tests: Tests to determine possibility of pregnancy are done on urine or blood samples. Another method is ultrasound imaging. The blood tests are very accurate and rarely are falsely positive. The urine tests we have today are somewhat sensitive, best done on a first morning urine sample and are more accurate with pregnancies that are further along,because the level of hormone(HCG) is higher.

Question 8

do homemade pregnancy tests really work? i took 5 of them and all turned out negative.

Accepted Answer

Reliable: HOME pregnancy tests that are bought at the drug store on the shelf and measure the pregnancy hormone HCG are very reliable.  Be sure to take the test in the morning and ideally 10 days or more after you've missed your period. HOMEMADE pregnancy tests are not reliable and have not been studied.

Question 9

do early pregnancy tests work?

Accepted Answer

Yes they do: Urine pregnancy tests are not quite as sensative as the blood test is but after a certain gestational age accurate as well.

Question 10

what is the mechanism by which home pregnancy tests work?

Accepted Answer

Urinary hcg: They test for  urinary levels of HCG which become elevated in pregnancy. It can take as much as 2 wks to turn positive and over-the-counter tests aren't always as sensitive as tests at your doctor's office. Recheck a week or two later if you're late for your period & suspect you might be pregnant.

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How to pregnancy tests work

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How do pregnancy tests work?

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Do homemade pregnancy tests work?

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Can the home pregnancy tests always work?

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Do home pregnancy tests work for all women?

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How well do the first response pregnancy tests work ?

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Do home pregnancy tests work correctly for 10 - 15 weeks of pregnancy ?

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Is it possible for pregnancy tests to not work on someone even if they are pregnant?

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Do homemade pregnancy tests really work? i took 5 of them and all turned out negative.

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Do early pregnancy tests work?

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What is the mechanism by which home pregnancy tests work?

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