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Pregnancy Forum > Getting Pregnant Forum > How Often Do False Positives Occur?
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Q: How Often Do False Positives Occur?
asked by: snowygirl on February 21st, 2006
Active User, very eHealthy
Im really curious how often pple get false positive. I would be so angry if I actually got a false positive and got my hopes up high. But I did just read that some pple got false positive with first response which I just used so I dont know now. Im scared actually im not preggy =( what do u think?
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rainy1279
replied on February 21st, 2006
Experienced User
I think the chance is slim on getting a false positive.... I used clear blue easy & it was easy .... Doctor confirmed it today....Due in oct.!!!!
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snowygirl
replied on February 21st, 2006
Active User, very eHealthy
Congrats
Im so happy for u hehe =) hopefully im preggy too hehe.
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Jolie_3110
replied on February 21st, 2006
Extremely eHealthy
I dont know about first response coz I am a clear blue girl!
But when I fell pregnant with my second 2nd baby I did 3 hpt they all came back positive although very faint. So I went to the doctors, he was alittle confused because I hadn't had a period for 2years and everyone thought I couldn't conceive, (it was a big shock for us too!)
he asked me to do a test for him so he could definitely confirm it, but it wasn't a blood test it was another wee test that I had to do in the morning so he could send it away to be tested. In 5 days I had the answer he told me it was negative - but then he told me he wanted me to do another one in 2 weeks because he had never known so many hpt's to be wrong. I did the doc's test again 2weeks later and it came back positive so my experience with home kits are better than with the doctors!!
Good luck snowygirl and I hope this time is your time!
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rainy1279
replied on February 21st, 2006
Experienced User
Wow jolie, all that..You went throu a lot.. I can't believe the first dr test came up neg.... At least the 2nd one came out pos...
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Jolie_3110
replied on February 21st, 2006
Extremely eHealthy
I know, the 2weeks wait was like the longest of my life! Ha! Nothing ever seems to be straight forward for me! Lol!
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Bridget
replied on February 21st, 2006
Especially eHealthy
Why wouldn't your doc have just done a blood test? To go through all that must have been frustrating.
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Jolie_3110
replied on February 21st, 2006
Extremely eHealthy
I dont know, but I dont ever remember having any blood test with either my pregnancies until after I was 10wks gone, and this test was the rountine test for h.I.V and stuff so I dont know if this is the same thing even.
With my 1st child my doc just took my word for it that I was pregnant and sent me a scan date for 12 weeks. Is this not normal?
Maybe I should get different doctor!! Lol!
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acoles70
replied on February 21st, 2006
Experienced User
I have a weird story about home preg tests. My cycles have never been regular, they range from 30-50 days. I had a period on dec 6 and on jan 5th I took a test because I had to take this medicine you can't take while you are preg. It was an equate (walmart) test and it popped up positive. I was freaked out, but then I took two accu-clear tests the next day and the next and they were negative. I was pissed. I called equate and health forum them out. Fast forward 9 days later, the 14th I took another test because I was going to take the medicine....It was positive. I had ovulated on the 3rd of january and the equate test had picked up what little hcg I had in my system in 2 days. Now I am 9 weeks pregnant. I have always been told a line is a line, no matter how faint. False positives are very few. Congrats.
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Abbysmom
replied on February 22nd, 2006
Experienced User
False positive are rare. False negative are common since different hpts pick up hcg at different levels. I had found a website once that said what level the hcg had to be at for each test to pick it up. The ones I use have to have at least 50. My blood test for my dd picked it up at 12. I think if you saw a line you are good to go.

Congratulations rainy!
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snowygirl
replied on February 22nd, 2006
Active User, very eHealthy
Feeling Less Symptoms
Im going to test again tomorrow to see if the line of hpt gets darker. But im bit worried since I feel not that many symptoms, like the cramping decreased could it mean actually im not preggy?
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Bridget
replied on February 23rd, 2006
Especially eHealthy
I don't really have any symptoms anymore either. Every now and again I get feelings like my period is coming (lower back pain, mild cramps) but I remember that from my last pregnancy. Oh, and I still have killer gas! Luckily I have a gassy dog I can blame it on! And earlier tonight I was waiting for a show to come on and decided to rest my eyes during the commercial break before it came on and I woke up a half hour later. That was weird since I didn't even feel tired while I was watching tv.

So don't give up hope yet!

I've decided after 4 faint lines that I should just accept the fact that i'm pregnant. I'm going to use the last 2 tests though just to make sure my lines get darker and i'll make an appointment on friday. I want to be excited but it's just not real for me yet.

Good luck!!! Baby dust! Baby dust! Baby dust!!!
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snowygirl
replied on February 23rd, 2006
Active User, very eHealthy
Wow
I feel tired too hehe. Well I didnt get my pd yet so I guess I still have hope. Thanks for the baby dust =)
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Twood
replied on February 23rd, 2006
New User
Congrats
I read that false pos dont usually happen and I worked in a hospital lab while in college. Our test which are a lot like hpt have a hcg reactant in it and when the urine hits the reactant there is a color reaction that gives you the two (pink/blue) line that tell us we are pregnant. False neg are more likely because of low hcg levels. I think that some test can detect hcg levels at 25 to 50 mlu, which could be 10 days past implantation or 14 dpo. I tried an aims test which could pick up at 20 mlu however it did not come back pos, but today when I used a 1st response it came back pos. It was a faint line but it would not react if I did not have over 25mlu hcg in me urine. So long store short, we are more likely than not pregnant. I have a blood test tomorrow so I will know for sure. Hope that helped you.
Congrats
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