How Does an Ovulation Test (OPK) Work?

on Jan 30, 2013

by Alyssia Granger

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How Does an Ovulation Test (OPK) Work?

An OPK is a test that is able to help you predict the optimal times at which to actively try to conceive through your body’s natural ovulation cycle.

What is an OPK?

An ovulation test, also known as an ovulation predictor kit, is a test that is able to help you predict the optimal times at which to actively try to conceive through your body’s natural ovulation cycle. A woman’s fertility is based upon the natural cycle of her body; from the beginning of the cycle when your body releases the hormones to begin the ovulation cycle to the releasing of a matured egg that is ready to be fertilized. Using an ovulation test takes the guess work out of trying to conceive by testing for the hormones that signal the oncoming of ovulation. Claim Your 20 Free Pregnancy Tests – Click Here

What does on ovulation test look for?

A common misconception with ovulation tests is that they tell you specifically when you are ovulating, which sadly isn’t true. Ovulation predictor kits actually work by testing for the luteinizing hormone (LH) which is the indicator of your body preparing to release a matured egg. At the start of the ovulation cycle your body will begin to produce FSH (follicle stimulating hormone) that developing the follicle by which an egg is developed and released. When the follicle is ready it is released and there is a spike of LH in the body that stimulates the follicle to release the matured egg at which point roughly 30 hours of ovulation begins.

Types of ovulation tests

Ovulation tests have two different styles that can be used to test for the LH spike in the body:

Test Strip Method – For the test strip method you are usually provide a container to fill with urine and then instructed to dip the test strip into the urine for a few seconds to allow it to test for LH. You can also hold a test strip mid-stream in your urine as well, but it just may be a bit messier without the applicator to hold onto.

Mid-Stream Method – For this type of ovulation test you are instructed to urinate with the test strip at the ready, when you have urinated for a second or two you’ll want to place the strip in the direct path of the urine stream for a few seconds and then set it aside to allow it to display the results.

How to read an OPK

Each of the tests works with relatively the same percentage of correct results; the difference is merely one may be a little bit messier than the other. Each type of test provides a control color test that allows you to know that it is working correctly and provides a color chart to help you properly interpret the results. The level of LH in the system is the defining factor of how close you are to ovulation; a lighter color indicates that you might be at the very beginning of the LH spike before ovulation (which may be 14 hours or more away) while a dark color indicates that your body is more than likely within just a few short hours of ovulation.

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How Does an Ovulation Test (OPK) Work?, 4.2 out of 5 based on 5 ratings

Alyssia is mom to 2 giggley twin girls, Sophia and Emma, and son Hunter. She's a Southern girl, passionate about photography, travel and her husband Josh.

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  • Flavian

    I fertile days where on 9th march and i had sex with my boyfriend, am now feeling some pregnancy symptoms. Is it too early to get tested?

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  • Monica Scott, RN

    That would depend on whether you’ll be using a home pregnancy test (urine test) or a blood test. Home pregnancy tests detects the amount of hCG (the pregnancy hormone) but only if it reaches a certain level. Almost all urine pregnancy tests will give you accurate results if you test at around the time your period would normally be due.

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  • bmoreMommy6

    I had a +opk test on 2/24/13 and a +opk 2/25 and 2/26 I have been feeling different for about a total of 8 days. I bd on 2/24 and 2 days later i know its two early to be pregnant or is it? sm1 please help

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  • Monica Scott, RN

    Home pregnancy tests are urine tests. They detect the amount of hCG in your urine, but only when it reaches a certain level. Almost all urine pregnancy tests will give you accurate results if you test at around the time your period would normally be due; about two weeks after you ovulate. It is best to take the test first thing in the morning using your first morning urine as it contains the highest concentration of hCG.
     

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  • khyati

    Hi I have recently missed my pregnancy, I was 4 weeks pregnant. My progesterone was 2 ng, and hcg was 200 and I started spotting and eventually heavy bleeding. We used ovulation kit to help conceive, but I couldn’t make it. Can you help me to conceive for the next time? Do I need to take any hormonal treatment?

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  • Dr. Renee Hanton, MD

    I am sorry to hear about your loss. Your doctor can determine if you need hormonal treatment after you have your hormone levels checked. On the other hand, you can try taking prenatal vitamins especially one containing folic acid and B vitamins as it helps prevent miscarriage.

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  • brk

    I had a regular cycle of 28 days with 5 days of Menstruation but last month i had my periods on 19Th sep(26 days) & it long for 4 days only. I’m confused with my ovulation dates can any one please help me out in this. I’m starting using Ovulation kit since last three days but only getting faint line. I’m desperate for a baby, please help me.
    My previous Menstruation dates are: 28Th july, 25Th August, 19Th Sep 2014

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  • Emalie Glenn

    I am in the 2nd day of my cycle , but have much lighter bleeding than my normal cycles. I took an ovulation test and it was a positive, a light positive but still a positive…what does this mean?

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  • niecey Grady

    I used the test strip method for ovulation predictor. I got a faint line and a darker line in the strip, what does that mean

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