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FAQ Ovulation Test Kits

We are here to help if you need us. Below is a selection of the most frequently asked questions abour ovulation tests. If you do not see the answer to your question here, then e-mail or telephone us, and we will endeavour to answer it for you.

What is an ovulation predictor test kit & how does it work ?

An ovulation predictor test kit gives you advance notice that you are going to ovulate by measuring a hormone in your urine called Luteinising hormone ( LH for short ) This hormone is relased & peaks just prior to ovulation and is the trigger to the ovary to release the egg. By identifying this peak in the levels of LH each month also known as the LH surge we can identify the most fertile time in a womens cycle.
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When do I start testing with urine LH ovulation test kits ?

For most urine ovulation test kits it depends on the length of your cycle:
When to start testing
Determine the length of your menstrual cycle. Your menstrual cycle length is the number of days from the first day of your period (menstrual bleeding) to the last day before your next period starts. Think back over the last few months to decide what your usual cycle length has been.
Circle your usual cycle length on the WHEN TO START CHART below. Select the number directly underneath. Starting the first day of your last period, count ahead the selected number of days on your calendar. This is the day you should begin testing.

When to start chart
Circle your usual cycle length.

Cycle 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Start 06 06 07 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Example, if your cycle length is 26 days start testing on day 9. (Where day one is the first day of your last period).

Note: If you are unsure about your cycle length, or your cycles are irregular, you may want to use your shortest cycle length when reading the chart. If you do this, you may need to test for more than 5 days.
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When's the best time of day to take an ovulation test ?

The best time to collect a urine sample for ovulation testing is usually early to mid afternoon, ideally between 2pm and 2.30pm. This is because studies have shown that the hormone that you are measuring LH, is at its highest levels at this time of day, in most women. If you tested first thing in the morning, it is likely you would miss your LH surge, as the hormone is very low first thing in the morning.

Why do I need to restrict my fluid before I collect my urine sample for my LH test ?

You will need to restrict your fluid intake for about 2 hours before you collect your urine sample for the your LH ovulation test. This is beacuse if the urine sample is too dilute you may miss the LH surge, and therefore you would miss your 1st day of your most fertile period.

How do you use ovulation test sticks ?

How do you use ovulation test sticks ?
Ovulation test sticks or strips are very simple and easy to use. They screen urine for a hormone called LH or Luteinising hormone, that increases rapidly just before ovulation, and is the hormone that triggers the release of the egg from the ovary. This hormone can be detected in your urine. The LH tests work by identifying when this hormone is above a certain level that is required to stimulate ovulation. This high level is known as the LH surge.

To use an ovulation test strip you simply collect your urine sample at the correct time of day, usually early to mid afternoon for most women and then you dip the urine test strip into the urine sample for a few seconds and then lay it flat. You will see the urine running along the strip, and you should see a Control or C line appear. This means that the test has absorbed enough urine. You then wait the rquired time as specified in the instructions for the test that you are using, usually a few minutes, and then you look for a Test or T line to develop. To be positive the T line must be the same as, or darker than the C line.
Detailed information on drug test detection times and cut offs for urine and saliva drug testing kits by brand

How long do the results take to appear on my ovulation test ?

You can usually read the results on most ovulation test kits within about 10 minutes. Read the instructions for the test kit that you have purchased, as they may vary a little from band to brand. A positive result will not disappear, but some negative results may later turn positive if left for longer than the specified time in the instructions. If this happens this is not a positive result. It is best to discard the ovulation test kit once you have read the result so you will not be tempted to look at it again.

What does no LH surge mean ?

First thing to say is don't panic. There are several possible explanations for not detecting the LH surge.
• LH surge may be too mild to be detected by the LH tests that you are using. May be worth trying a lower sensitivity LH test.
• Your urine sample amy have been too dilute. Make sure you restrict your fluid intake for about 2 hours before you take the test
• You may have tested at the wrong time of day and missed the LH surge. Ideal time to test is early to mid afternoon.
• The test strip may not have absorbed enough urine. Make sure that the control line is visible. This shows that sufficient urine has been absorbed, for the test to run. if the control line is not showing dip the strip into the urine sample again.
• The LH test that you are using may be faulty. Make sure that you buy from a reputable supplier, and that the tests are in date and have been stored correctly.
• You may be testing at the wrong time of your cycle. For women who have irregular periods, knowing when to test can be very difficult.
• You may not have used the test correctly. Make sure that you read the instructions before starting the test and use a timer.
• You may not be going to ovulate this month. This may just be a one off, but if it happens repeatedly you should see your doctor, as it may mean that you are not ovulating and need further investigations.
• You may already be pregnant. There is always a small possibility that you may already be pregnant. If your last period was different to usual, or very light it may be worth doing a pregnancy test.

Why do I ovulate late in my cycle ?

The length of a womens menstrual cycle varies from women to women. Ovulation occurs 14 days before your period. If you cycle is 28 days this means that you would ovulate around day 14. If your cycle is 30 days long you will ovulate around day 16. Ovulation occuring after day 21 of the cycle, is regarded by the medical profession as late ovulation. There are many possible causes for this:
• hormones
• illness
• stress
• general health issues
• over exercising
• weight too high or too low
• genetic problem
• ovarian problem

If the late ovulation is a one off, then is is probably caused by stress either physical or phycological. However if ovulation is late often this can make it more difficult to conceive, and may need further investigations. Talk to your doctor if you are experiencing late ovualation or erratic cycles regulalry.

What to do if not ovulating ?

If you think that you are not ovulating, then you should talk to your doctor as you may have an ovulatory disorder ie ovulation is not occuring at all, or occuring only very occaisonly. The good news is that ovulatory disorders are treatable. Clues that you may have an ovulatory disorder are very irregular or erratic cycles.
Ovulation tests

How accurate are ovulation tests ?

Urine ovulation tests detect the LH surge that is the trigger to ovulation occuring. Ovulation usually occurs 1-2 days after this. When used correctly LH tests are approximately 99% accurate at detecting this LH surge. However this does not guarantee that ovulation will occur, it just shows that the LH surge has occurred. It is possible to have an LH surge and yet still not ovulate. In this case there is usually a problem with the ovaries that is preventing the release of the egg.
What does a prolonged LH surge mean?

What does a prolonged LH surge mean?

Normallly the LH surge last about 2-3 days. If it is regularly longer than 3 days then there are several possible causes to consider:
• Anovulation
• Approaching menopause

It is worth noting that if you are using ultra sensitive 20mIU ovulation tests then the LH surge may be detected for longer than if you are using the 40mIU LH tests

How long after having a coil IUCD removed will I detect an LH surge

Most coils now contain a hormone that means there may be a delay in ovulation and in the periods restarting. This is very variable and may take several months and when the period do restart, the cycle may be very erratic to begin with. This can make it difficult to use ovulation tests in the immediate months following removal of the IUCD (coil). In some cases the periods do not restart and you may just find that you are pregnant.

The control line on my LH test is faint. Does this matter ?

The colour of the control line can vary from batch to batch, and from brand to brand and also on the time of day that you test and the dilution of the urine. As long as the test line is as dark or darker than the control line the result is positive. To ensure the result is optimum try to always test at the same time of day, and restrict your fluid intake for 2 hours before testing. The best time of day to test is early to mid afternoon, ideally between 2pm and 2.30pm If you test at other times you may completely miss the LH surge. If you are unsure how to interpret your result please e-mail us a photograph and youre order number so we can advise you.

What are professional ovulation tests ?

Professional ovulation prediction tests include cassette kits, ovulation tests strips & ultra sensitive ovulation tests that are available in bulk packs. They are cheap yet highly accurate ovulation test strips from ALLTEST & Instalert. We also have an extensive range of professional pregnancy tests in strip, cassette and midstream formats that can be ordered for fertility clinics, healthcare professionals, fertility practioners & NHS at great value for money prices.
Professional & NHS ovulation & pregnancy tests

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