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OPK as HPT: Can I Use an Ovulation Prediction Kit as a Pregnancy Test?


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  #1  
October 3rd, 2010, 01:08 PM
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Join Date: Oct 2010
Posts: 1
Quote:
Ovulation prediction kits, OPKs, work by detecting the presence of luteinizing hormone, LH. LH is produced by the pituitary gland and triggers ovulation. OPKs are helpful in pinpointing when ovulation will occur, before it occurs. Before ovulation occurs, the body secretes a "surge" of LH, which triggers ovulation.
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  #2  
October 3rd, 2010, 01:08 PM
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Join Date: Oct 2010
Posts: 1
Wow!
Now I'm able to understant why I had so many positives opk.
I receive an HCG shot last Monday and I was using opk
to predict the exact time of ovulation. Thanks to your
explanation of LH and HCG's similarity I was able to
learn that when you receive a shot of HCG an opk is a total
Waste of time and money.
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  #3  
October 7th, 2010, 08:52 PM
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Join Date: Oct 2010
Posts: 2
Yeah, I had the same thing happen! Thought I was having the longest ovulation streak.
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  #4  
December 5th, 2010, 10:25 AM
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Join Date: Dec 2010
Posts: 2
I decided to test this OPK vs HPT thing. I used an OPK every morning starting on the day of my Ovidrel trigger shot (1-2 days before ovulation) until five days after my period started. The second line appeared on the date of ovulation and slowly faded over a few days after that. It then disappeared for a week. And then it began reappearing on 11DPO! It got darker (and I got more excited) from 11DPO until 13DPO when I had a blood test for pregnancy that was very clearly negative. And my period started on 13DPO! I carried on with the OPK a few more days, and the second line kept getting darker. My doctor says that your LH levels can start to rise with your period up until ovulation. So this suggests that a darkening OPK is not a good indicator of pregnancy, which is too bad since the OPKs are cheaper than HPTs!
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  #5  
June 22nd, 2011, 12:32 PM
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Join Date: Jun 2011
Posts: 2
My cycle is usually 31-33 days long. On cd 25, I felt "different". I had OPKs at home, but not HPTs. I took an OPK late at night on cd 25, then twice daily on cd 26 and 27. All of them were very positive. On cd 28, I did a hpt with fmu and it was very faintly positive. I went to the dr, and she confirmed I was pregnant. I took a 2nd HPT on cd31 with smu, and it was much more positive. I don't think that the hpt would have shown the positive as early as the opk did. It was so faint on cd 28, but the opk was steadily positive for several days prior to that.
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  #6  
August 29th, 2012, 07:52 AM
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Join Date: Aug 2012
Posts: 2
I have tested on my OPKs for the past few days. All came back BFN. This morning, I took an HPT and I got a BFP!!!!! Took my last OPK at the same time... that is a BFN. Don't waste your money on the OPKs. My recommendation, when it's "time" to test for pregnancy, use an HPT. Makes more sense, right?
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  #7  
June 16th, 2013, 10:46 PM
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Join Date: Jun 2013
Posts: 200
I also recommend the <strong><a href="http://goo.gl/OKjez">PREGNANCY MIRACLE METHOD</a></strong> to get pregnant quickly and naturally!
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  #8  
December 14th, 2013, 12:15 PM
dwhite23's Avatar Veteran
Join Date: Jun 2010
Posts: 199
Quote:
Originally Posted by nyctripper View Post
My cycle is usually 31-33 days long. On cd 25, I felt "different". I had OPKs at home, but not HPTs. I took an OPK late at night on cd 25, then twice daily on cd 26 and 27. All of them were very positive. On cd 28, I did a hpt with fmu and it was very faintly positive. I went to the dr, and she confirmed I was pregnant. I took a 2nd HPT on cd31 with smu, and it was much more positive. I don't think that the hpt would have shown the positive as early as the opk did. It was so faint on cd 28, but the opk was steadily positive for several days prior to that.
I just came across this response on a web search and this is my EXACT situation!! I have a long cycle and the OPK got it right several days before the hpt did.
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