Pregnancy test!!?

Question

after how many days of missing your period will a PT test be accurate

Answer 1

How soon can I test? Well, first you gotta know how the test works. Briefly: the home pregnancy test (HPT) works by detecting a hormone called human chorionic gonadotropin (hCG.) When an egg is fertilized, it takes about 6 to 12 days to implant in the uterus, and then it begins to secrete hCG. It takes another day or two for enough hCG to build up and make its way into your pee. So, generally speaking, the earliest you can expect a positive HPT is 8 days past ovulation ("DPO") and the latest would be about 16 DPO. It is possible to get a positive test earlier or later, but not as common. In my experience, if you use a sensitive "early" test (anything that detects 25 mIU/mL of hCG or less) you can test around 12-14 DPO and feel reasonably secure with your results (the later you test, the more secure you can feel in its accuracy.)

If you do not chart or monitor your fertility in any way, and you think you may have conceived, you should wait 19 days (or longer) after having sex to test. Why 19?! Sperm can live approximately 5 days in the proper environment; if the sperm managed to live until you popped an egg, the actual conception could have taken place several days after the sex act that got the sperm there. To make sure you're not testing too early, assume the sperm had very long lives (5 days is considered a very long sperm life) and that conception occurred then. Then allow 14 days for the embryo to implant and develop enough hCG to show up on a pregnancy test (96% of pregnant women will test positive by then.)

Note: some HPT's say "test 5 days before your period is due!" or some such thing. Please note they are assuming a textbook 28-day cycle, with ovulation on Day 14. "5 days before your period is due" thus really "translates" to 10 DPO.

Essentially, you should remember that your high school biology textbook was WRONG. NOT all women have 28-day cycles and NOT all women ovulate on Day 14. For more info on this type of thing, see the Fertility Info section.

Here's an example. This is the textbook-perfect 28-day cycle with ovulation occurring on day 14 (in pink.) 10 DPO and later are reasonable days for testing (in green.) This is the cycle the HPT companies have in mind when they say "test 5 days before your period is due!"



Well, not everyone's body works this way. Here's another 28-day cycle-- but this one has ovulation occurring a little bit later, still well within the normal range. Watch what happens to your (green) testing opportunities!



All of a sudden, "5 days before your period is due!" is way too early for you to expect a positive test! (I tend to ovulate later myself, so by the time the "gold standard" of testing at 14 DPO is applicable, my period is already 3 days late! I needed to use an "early detection" test on the first day of my missed period. A "regular" test would probably have been negative-- even though my daughter is living proof that I was, indeed, pregnant ;)

Of course, it works in reverse, too. If you're an early ovulator, you're lucky! Check it out:



In this scenario, you could test even sooner than 5 days before your expected period.

Ultimately, it's important to remember that implantation is a variable thing. You may be able to detect a pregnancy very early on, but then again, you may not! If you can't, don't despair.
http://www.peeonastick.com

Answer 2

You can potentially show a poisitve HPT as early as 10 days past ovulation. Everyone is different and depends on when the egg implants (normally from 5-8 days past ovulation). Implantation (when the egg burrows into the lining of the uterus) triggers the hormone that turns a pregnancy test positive so that can take a few days show up in a test. Some tests are also much more sensitive than others. Digital tests in my experience seem to be far more reliable than standard ones. If you want very detailed info on this I can suggest a good website www.peeonastick.com. Meg the person who runs it has VAST experience with pregnancy tests and pregnancy etc. I think you'll find all you need to know there.

Answer 3

A Pregnancy test will be accurate any time after your missed period.

Answer 4

Nowadays, most are effective if your period is one day late.

However, should you take it when you are one day late & it comes up negative, you may need to test again should you period not come.
Likewise, should it show positive...you may start your period a week or two later. This does mean it was a false read, but that you conceived & your body rejected the idea of pregnancy. Many late periods are conceptions halted naturally.

Answer 5

about 5 days after the missed period.

Answer 6

Pregnancy tests can usually detect hCG 8-11 days after ovulation, thats a couple of days before your period is due. This depends on the sensitivity of the test. It should say on the test when it should be used and how sensitive it is.

Answer 7

It depends if you r body has produce enough pregnancy hormone but usually they are pretty accurate as soon you miss your period or even 5 days before you miss, like FIRST RESPONSE.

Answer 8

If you are doing a urine test for hcG Human Chorionic Growth Hormone, I believe it will be 8 to 10 days after conception.

Answer 9

mine showed pregnant the 1st day after i missed my period!

if your period is very irregular or always a few days off a week or less should show accurate results.

Answer 10

EPT's are very accurate in predicting pregnancy one day after your missed period.