Top 10 most frequently asked questions

 
  • How accurate are Clearblue® Pregnancy Tests?

    All Clearblue® Pregnancy Tests are more than 99% accurate in laboratory tests, when used from the day you expect your period to start1.

    99% accurate at detecting typical pregnancy hormone levels. Note that levels may vary. See insert.

  • When can I test with Clearblue® Pregnancy Tests?

    Clearblue® recommends you take a pregnancy test from the day you expect your period. However, the level of pregnancy hormone increases rapidly in early pregnancy and Clearblue® Pregnancy Tests can be used 5 days sooner than your missed period (which is 4 days before your expected period)1. If you take a pregnancy test before you expect your period and get a ‘Not Pregnant’ (negative) result, there is still a chance that you may be pregnant because the level of the pregnancy hormone was not high enough for the pregnancy test to detect. See the Clearblue® Pregnancy Test product pages for details of results of clinical testing with early pregnancy.

    To work out when your period is expected, calculate your usual cycle length by counting the number of days from the first day of your period, until the day before the next one starts. If you have irregular cycles, you should allow for your longest cycle in recent months before testing..

    1. Clearblue pregnancy tests can be used as early at 4 days before you expect your period. That's 5 days sooner than waiting until you miss your period to test. The amount of pregnancy hormone increases rapidly in early pregnancy. In clinical testing with early pregnancy samples the Clearblue PLUS Pregnancy Test gave the following results: 56% of women received a 'Pregnant' result 4 days early, 88% of women 3 days early, 97% of women two days early and 98% of women 1 day early. In clinical testing with early pregnancy samples, Clearblue Digital Pregnancy Test gave the following results: 51% of women received a 'Pregnant' result 4 days early, 82% of women 3 days early, 90% of women two days early and 95% of women 1 day early.

  • I previously tested ‘Pregnant’ but have tested again and got a ‘Not Pregnant’ result, or my period has started. What does this mean?

    Whilst the pregnancy test is over 99% accurate at detecting the pregnancy hormone from the day of the expected period, it’s possible to get a pregnant (positive) result and find out later that you’re not pregnant (i.e. you may later get a not pregnant result, or your period may start). This may be due to natural loss during the early stages of pregnancy, known as ‘early pregnancy loss’, which sadly is not uncommon, as around 1 in 4 pregnancies end in early pregnancy loss. If you do get unexpected results, ask your doctor for advice.

  • What is ovulation, when does it occur and why it important?

    Whether you are thinking about trying for a baby or trying already, gaining a better understanding about how your body works can be a big help. One in two couples could be trying to conceive on the wrong days of the woman’s cycle3, so we’ve put together some information to help you understand your menstrual cycle and the ovulation process. Ovulation happens when hormone changes trigger your ovaries to release an ovum (egg) – usually 12 to 16 days before your next period starts. You are most fertile on the few days leading up to and including the day of ovulation.

    The ova (eggs) are contained in your ovaries. During the first part of each menstrual cycle one of the eggs will be prepared for release from the ovary. As you approach ovulation, your body produces more estrogen. This hormone causes the lining of your uterus to thicken and also creates a sperm friendly environment. The higher estrogen level triggers a sudden rise or ‘surge’ in luteinizing hormone (LH) which then triggers the release of the egg from your ovary, this is called ovulation.

    Normally, ovulation occurs 24 to 36 hours after the LH surge, and you are at your most fertile on the day of the LH surge and the day after.

    The egg survives for up to 24 hours after ovulation which is when it can be fertilized. If fertilization does not occur, the levels of the fertility hormones decline and the next cycle starts with the shedding of the thickened uterus lining (period).

    Although the egg only survives for up to 24 hours, sperm can survive for up to five days. That is why you can still conceive even if you have sex 4 -5 days before the egg is released.

     

    3 Johnson SR, Foster L and Ellis J. Human Reproduction (2011) 26: i236

  • What are the chances of getting pregnant during the fertile days?

    The chances of getting pregnant will vary cycle to cycle and woman to woman and will be dependent on many variables such as the woman’s age, her partner’s age, their general state of health and lifestyle. In a study2, the chances of getting pregnant on each of the days during the fertility window were reported and are shown in the graph below:-

    2 Wilcox AJ., et al. NEJM (1995) 333: 1517

  • How can I find out when I’m most fertile?

    There are a number of ways that you can find out when you are most fertile, one of the most simple and accurate is by using home ovulation tests such as Clearblue Ovulation Tests and the Clearblue Fertility Monitor.

    Clearblue Ovulation Test or Clearblue Digital Ovulation Test help you pinpoint the 2 most fertile days to conceive naturally, by detecting your LH surge.

    Clearblue Advanced Digital Ovulation Test is the only ovulation test that typically identifies 4 or more fertile days1...that’s more than any other ovulation test. It tracks the changing levels of both LH and estrogen and its smart algorithm adapts to your personal cycle.

    Clearblue Fertility Monitor is designed to identify all your fertile days2. It not only detects the LH surge and pinpoints your 2 peak fertility days, but can also identify the additional days of high fertility leading up to ovulation, by detecting the rise in estrogen. It also stores your cycle information and adapts its testing regime to your personal cycle.

    1 In a study of 87 women, 4 or more fertile days were identified in 80% of cycles using actual cycle length (2012).
    2 Number of fertile days will vary. In a German study of 149 cycles, Monitor results correlated with serum hormone levels & ultrasound observed ovulation.

  • I've used Clearblue Ovulation Tests for several months and haven't got pregnant. Can I be sure of getting pregnant?

    It can take normal, healthy women many months to conceive. There are many reasons why you may not get pregnant, even if you've made love at your most fertile time. So keep trying. If after several months of trying you've had no success, it’s advisable to go to see your physician to find out more about your next steps.

    In many countries, your physician will usually expect you to have been trying to get pregnant for a year if you are under 35 yrs old or for 6 months if you are 35-40 years old, before they will consider further investigation. If you are over 40 years old then you should ask for advice immediately.

    You may also want to learn more about the Clearblue Fertility Monitor, it’s designed to detect all your fertile days1.

    1 Number of fertile days will vary. In a German study of 149 cycles, Monitor results correlated with serum hormone levels & ultrasound observed ovulation.