2007-03-21 13:51:43 · 8 answers · asked by Mom2aGirlandaBoy 3 in Pregnancy & Parenting ➔ Pregnancy
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.)
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2007-03-21 13:54:41 · answer #1 · answered by ஐ♥Julian'sMommy♥ஐ 7 · 0⤊ 0⤋
I haven't even missed my period yet when I did my test. According to the blood tests I had done the day after I did the HPT I was about 3 weeks pregnant. My sister found out when she was only 10 days pregnant when she did her PT (but had already missed a period). So from my own experience, they're pretty accurate fairly early in pregnancy. But at 1 - 2 weeks it's not uncommon to get a false negative.
2007-03-21 21:02:36 · answer #2 · answered by elainevdb 6 · 0⤊ 1⤋
The day I found out I was pregnant the + sign was very faint, so it was probably the first day I was able to tell, because I took one 2 days before and it was negative. I did mine before my period should have started. Most pregnant tests detect pregnancy 4 days before missed periods, there's one now that does 5 days before, so you could test positive at about 2 weeks.
2007-03-22 00:09:41 · answer #3 · answered by aprilmommy06 4 · 0⤊ 0⤋
I did hpt about 2 weeks after conceived. We brought the cheapest hpt from walmart (walmart brand) just for the fun of it. And it turned out that I was pregnant. We were excited and surprised by the result. The result was confirmed few days later in my OB office.
Good luck!
2007-03-21 21:22:01 · answer #4 · answered by Iris 2 · 0⤊ 0⤋
I was 3 weeks 5 days when i took mine, and tested positive. I was so shocked! But thats pretty earlier, if you test negative and still think your pregnant, wait 4 days or a week then retest! Hope all is well, good luck!
2007-03-21 20:56:07 · answer #5 · answered by Anonymous · 0⤊ 0⤋
FIVE DAYS BEFORE YOUR MISSED PERIOD IF YOU THINK YOU ARE PREGNANT. i WAS A DAY LATE FOR MY PERIOD AND I TAKE 2 HOME PREGNANCY TEST BOTH CAME UP POSITIVE. 4 WEEKS WHEN I FOUND OUT.
2007-03-21 21:05:43 · answer #6 · answered by nora85 2 · 0⤊ 0⤋
as soon as there is enough hcg in your blood for which ever test you are taking. they vary.
2007-03-21 20:55:08 · answer #7 · answered by lizincali 5 · 0⤊ 0⤋
I always wait until my period is a week late.
2007-03-21 21:05:03 · answer #8 · answered by JS 7 · 0⤊ 0⤋