When should you start an ovulation test?

An ovulation test begins your journey to pregnancy. Here is a guide to help you know when to get started.

By First Response
When should you start an ovulation test?

First, determine the length of your normal cycle. It could be anywhere from 20 to 45 days long. Start counting on day one of your period (the first day of bleeding or spotting)—and stop counting on the first day of your next period. This is the length of your cycle.

If the length of your cycle is different each month by more than just a few days, then simply take the average number of days over the last three months.

Once you determine the length of your cycle or an average number of days, you can use the chart below to help determine the day you should begin testing. On the top row of the chart, find the number that corresponds to the length of your cycle. Directly below that number is a smaller number. This is the day of your cycle when you should begin testing.

Here's an example: Jennifer has a regular cycle of 28 days and started her period on the fourth day of the month. Beginning with the 4th as day one, she counts forward 11 days and begins testing on the 14th.

When should you start an ovulation test? | chart Using the first day of bleeding or spotting as Day 1, count forward number of days to begin testing.
Daily Digital Ovulation Testing begins on day 5.

When should you start an ovulation test? | calendar

It isn't necessary to take your ovulation test in the morning. Any time of day is fine. However, you should test at approximately the same time each day. Also, drinking excessive amounts of liquid can dilute the LH (luteinizing hormone) in your urine. Therefore, it's best to reduce your liquid intake for two hours before testing.

FIRST RESPONSE™ ovulation test kits detect your body's LH surge, giving you an easy and accurate way to determine the two days each month when you're most likely to ovulate. Your LH surge signals that ovulation will take place in 24—36 hours. If you have intercourse within this 24—36 hour window, you should maximize your chances of getting pregnant.


Try the FIRST RESPONSE™ Daily Digital Ovulation Test to help you get pregnant sooner.

Visit for more information.

This article was originally published on May 30, 2016

Weekly Newsletter

Keep up with your baby's development, get the latest parenting content and receive special offers from our partners

I understand that I may withdraw my consent at any time.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.