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Doctor insights on: How To Read The Clear Blue Ovulation Test

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Why does the clear blue ovulation predictor sticks only show me ovulating one day of the month when it says it will show u the 2 most fertile days?

Why does the clear blue ovulation predictor sticks only show me ovulating one day of the month when it says it will show u the 2 most fertile days?

Often positive 1 day: Ovulation predictors show the hormone surge in the urine that triggers ovulation and that surge lasts less than a day. When the predictor turns positive a woman will ovulate in 12-30 hours. So have sex that day and the next day. Those are the 2 most fertile days. You don't need to check a predictor any more that cycle once it turns positive. Hope this helps! ...Read more

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Dr. Philip Chenette
1,839 doctors shared insights

Ovulation (Definition)

Ovulation is the act of the ovary releasing the egg after it has been hormonally prepared, to be ...Read more


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How acurate are the home fertility kits for males, with the blue dye and color chart?my partner did one and came negative, we are worried,what to do?

How acurate are the home fertility kits for males, with the blue dye and color chart?my partner did one and came negative, we are worried,what to do?

Male fertility kits: The kit only tells if the sperm count is 20 million or more. If the result is negative, a complete infertility work up should be done. ...Read more

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Positive opk, no cervical mucus, how do i know if i ovulated? which is the most reliable way to detect ovulation? anything about conception will help!

Positive opk, no cervical mucus, how do i know if i ovulated? which is the most reliable way to detect ovulation? anything about conception will help!

Ovulation test: The ovulation predictor test is the moser reliable for detecting ovulation. Some fertility problems can be caused by problems with cervical mucous. If you ovulate and still have problems conceiving, intrauterine insemination with your partners sperm could be the solution. ...Read more

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When using the ovulation test kit to check for LH surge how many days does the LH surge shows and stops?

When using the ovulation test kit to check for LH surge how many days does the LH surge shows and stops?

LH surge: LH is always present but spikes to much higher levels in the 12-36 hours before ovulation. It will then begin to decrease and return to normal baseline levels. This is why you stop testing after you get a positive result. Once you get a surge then you stop testing for that menstrual cycle ...Read more

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How accurate it's the clear blue easy weeks estimator when used with first morning urine? Do you have to add the 2 wks?

How accurate it's the clear blue easy weeks estimator when used with first morning urine? Do you have to add the 2 wks?

99% accurate: The clear blue easy weeks estimator is 99% accurate at determining pregnancy, when testing from the day of the expected period. The test tells you how many weeks based on time since ovulation. To obtain gestational age (what your OB will go off of since your last menstrual period), add 2 weeks. ...Read more

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When is the best time to start an ovulation test kit and for how long should I test? What if none of the test are positive?

When is the best time to start an ovulation test kit and for how long should I test? What if none of the test are positive?

Depends: It really depends on the frequency of your periods. If they are about every 28 days, you can start testing on day 10 of your cycle. The kits usually come with detailed instructions. ...Read more

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Does a +ve OPK indicate top fertility day? What's the max time aftr that for conception to happen? How reliable are opks?

Does a +ve OPK indicate top fertility day? What's the max time aftr that for conception to happen? How reliable are opks?

1-2 days.: Ovulation prediction kits detect the lh surge that produces your egg release within 24 hours. As the egg only lives for ~24 hours after its release, conception has to occur within 1-2 days of the positive opk. Take Folic Acid 1 mg daily and best of luck! ...Read more

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What does a negative pregnancy test usually look like how dark is the test window?

What does a negative pregnancy test usually look like how dark is the test window?

Follow instruction: It's hard to say since different tests have different way to tell you the result. You just need to follow the instruction on the box. If the positive is still light, wait another day and do it again. When in doubt, bring the test to your doc or a pharmacist and they can help interpret the result. ...Read more

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What does it mean the ovulation predictor showing positive for more then 4 days?

What does it mean the ovulation predictor showing positive for more then 4 days?

Fertile period: It estimates your fertile period which lasts about 6days. 5days before menstruation, length of time sperm can stay alive and fertilize the egg. The egg has a lifespan of 24hours., There are some hormones that increase to correspond with this period. These hormones can be detected by the ovulation kit ...Read more

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How to tell when your ovulation test is good?

How to tell when your ovulation test is good?

Ovulation: Unfortunately, there isn't a good vs. Bad ovulation, i imagine you may mean ovulating a healthy egg vs. An unhealthy one. Still, your body doesn't distinguish between either. To get a sense of your chance for conceiving, you should talk to your provider to get some testing of your ovarian reserve. ...Read more

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How long do you ovulate after the first ovulation prediction test turns positive?

How long do you ovulate after the first ovulation prediction test turns positive?

Ovulation : Ovulation is the expression of the readied egg from the ovary. It is a moment. Many people think of it as a one 24 hour process.... ...Read more

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How accurate does the ovulation kit work is it good?

Ovulation Predictor: I don't know which ovulation predictor kit you are referring to or what is specifically available in Britain. However, in general, ovulation prediction kits can be valuable in determining fruitful times for intercourse. Women with irregular menses may have difficulty timing intercourse without use of an aid. ...Read more

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My nurse said OPK can detect hCG in the system after the trigger. Does this also mean OPK can detect pregnancy on the day period is due.

My nurse said OPK can detect hCG in the system after the trigger. Does this also mean OPK can detect pregnancy on the day period is due.

Cross reaction: An opk is meant to detect the hormone lh which surges at the time of ovulation. A urine pregnancy test is meant to detect hcg, the hormone of pregnancy. However, both HCG and lh are very close relatives chemically and that's why the opk can pick up a pregnancy and the urine pregnancy test can pick up an ovulation surge. You should still use each test for its specific purpose. ...Read more

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How soon can a pregnancy show in blood test if i know the ovulation timing ?

How soon can a pregnancy show in blood test if i know the ovulation timing ?

Usually 1-2 weeks: These tests are fairly reliable at this time period but better within the first 3-4 weeks. Knowledge of ovulation timing probably does not factor into determining the effectiveness of the test. ...Read more

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Can a ovulation test be positive for ovulation when in fact ur actually pregnant? I have heard the test can get the hormones mixed up!

Can a ovulation test be positive for ovulation when in fact ur actually pregnant? I have heard the test can get the hormones mixed up!

Yes: There is a cross reaction with the hormone indicating pregnancy. So i sometimes tell patients to use their ovulation sticks towards the end of a cycle in which they are trying to conceive, to see if they are pregnant. ...Read more