Using An Ovulation Prediction Kit (OPK) (Episode 7)

Dr. Tash, leading fertility expert explains how to use an OPK. Ovulation predictor kits can help your detect when you are about to ovulate by looking for an LH surge in your urine.

In this episode you will learn the following:

How do ovulation prediction kits work? How do I use one accurately? There are only a few days per cycle that a woman can get pregnant. If you have sexual intercourse in the days leading up to and including ovulation day, you can dramatically increase your chances of conceiving. In this episode of the series you learn:
  • The types of test kits available.
  • How long the egg lives for after ovulation.
  • Why it's important to get the timing right.
  • When the LH surge happens.
  • How to use an OPK.
  • How often you should have sex after you see a positive test result.

About this Series

Dr Tash, leading fertility & pregnancy expert explains how to get pregnant. 1 in 6 couples struggle with getting pregnant after 12 months, this series digs deep in to how you can get pregnant naturally. Sperm and egg must meet within a small 12-24 hour window within the menstrual cycle. You will learn how you can maximize your chances of conceiving and increase your chances of getting pregnant faster.

Ovulation Calculator has produced this video series with leading fertility expert, Dr Natasha Andreadis (Dr Tash).

Embed This Video

<iframe width="853" height="480" src="" frameborder="0" allowfullscreen></iframe><div style="clear: both;"><a data-cke-saved-href="" href="">Courtesy of</a></div>

Video Transcript

I'm Dr. Tash. This is an ovulation predictor kit. Here's how to use it.

There are two types of ovulation predictor kits. One uses saliva, the other, urine. Today we're going to be focusing on urine.

People often get the timing wrong and then they wonder why they're not getting pregnant. The great thing about the ovulation predictor kit is it tells you when to start having sex, because you want to start having sex before the egg is released. Because really the sperm should be there when the egg is released to maximize the chances of fertilization and pregnancy.

These kits are a great way of you monitoring your fertile window at home. And that's really important, because once you've ovulated, that egg only has 12 to 24 hours to become fertilized. So it's really important you're aware of your fertile window before you ovulate.

The kit works by detecting luteinizing hormone, or LH, levels in your urine. Now, about 24 hours before you ovulate, LH levels surge. They rise quite quickly, and that is an indicator that you're going to ovulate quite soon.

There are many different kits on the market. Just read the instructions. In general, I recommend you don't pee for about four hours before you use the kit and when you detect an LH surge for the first time, that means you need to start going for it. You need to start having sex, because it means the fertile window is open.

People often ask me, "How often should we have sex?" I recommend that as soon as you detect that LH surge, have sex every day, every day in the lead-up to and the day of ovulation. That'll maximize your chances of falling pregnant.

Got a question or a comment?

Join the Discussion!

Load More Comments
  1. EDWIGE Nov 04, 2016
    Hi, I had my period on October 10th and it finished on the 14th. I had sex with my hubby on the 23rd and 25th. Can I get pregnant or no? Thanks.
  2. My Dec 01, 2016
    I run a 29-day cycle. I ovulated on the 15th / 15 days counting from the first day of my menstral circle. When exactly can I have sex with my husband to get a baby boy while taking clomid.
    1. Christina (OC Team): If you log your cycle data into your account here, you'll get a prediction of your fertile window with a suggestion of when to have sex for a boy or girl (based on the Shettles Method). - (Dec 02, 2016)
  3. Ramina Jan 05, 2017
    I tried an ovulation kit for the first time. Both c and t were the same color bands. What does it mean? If it's positive, when should I have sex? Right now, we are trying alternate days from the 12th day to 18th day.
    1. Christina (OC Team): The test line should be darker than the control line for a peak positive, and that means you're about to ovulate in 12-36 hours, so it's time to BD. Good luck! - (Jan 08, 2017)
  4. Shilpi Jan 18, 2017
    My husband and I have been trying for the last 7 months, but the result is always negative. I have a problem of leuchorhea. Does it affect conception? I have a 25-day cycle. When should I ovulate? My periods are regular.
  5. Umeh Mar 19, 2018
    My cycle is irregular and as of January and February my cycle was 28days but this month my period suppose to come out on the 14th of this month but it didn't come; on the 17th it came out and still stopped that same day,18th it didn't come out...;19th which is today it started again but it is light and am having breast tenderness,fever ,inability to lie flat with my stomach,nausea ,hotness of the eye ....pls what will I do?

Add your own comment

Drag to See

Close Image