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An innovative pregnancy test, designed using customer insights to be the easiest pregnancy test to use

Over 25 years of consumer research has given Clearblue an exceptional understanding of our consumers' needs, allowing us to develop the next step in visual home pregnancy tests. Not only is the Clearblue PLUS Pregnancy Test over 99% accurate at detecting pregnancy from the day of the expected period1, but it is also designed to be the easiest home pregnancy test to use.

By incorporating a series of innovative design features, the Clearblue PLUS Pregnancy Test combines accuracy with ease of use to offer women a pregnancy test they can trust:

The Clearblue PLUS Pregnancy Test – over 99% accurate at detecting pregnancy from the day of the expected period1

The innovative Clearblue PLUS Pregnancy Test offers six important benefits:

The Clearblue PLUS Pregnancy Test – founded on sound science

The Clearblue PLUS Pregnancy Test detects a clinically proven urinary pregnancy marker, human chorionic gonadotrophin (hCG), and provides accurate results that the consumer can trust.

Published literature shows that urinary hCG levels in a normal pregnancy reach at least 50 mIU/ml on the day of the expected period.3-5 If a Clearblue PLUS Pregnancy Test is used from the day the period is expected, it is more than 99% accurate in detecting whether or not a woman is pregnant.2 This allows women to be confident in the results given by the Clearblue PLUS Pregnancy Test.

Can be used up to 4 days before the expected period2

Clearblue recognizes that one third of women test for pregnancy before they expect their period.6 Although Clearblue recommends that the Clearblue PLUS pregnancy test is used from the day that the period is expected, the high sensitivity of the test means that pregnancy can, in many cases, be detected up to 4 days before the expected period (that’s 5 days sooner than waiting for the day of the missed period) for women who wish to test early.

Not all pregnant women who test before the day of their expected period will obtain a 'Pregnant' result. This is because urinary hCG levels may not yet be above the threshold for the test. The likelihood that a pregnant woman will achieve a pregnant result with the Clearblue PLUS Pregnancy Test on each early test day is given the table below2.

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:
Number of days before the period was due Percentage of samples from pregnant women giving a ‘pregnant’ result
-1 98%
-2 97%
-3 88%
-4 56%

One leading competitor product (the First Response® Early Result pregnancy test), distributed by Church & Dwight Co., Inc.§ claims that it can detect pregnancy as early as 6 days before the period is missed (5 days before it is expected). This has been achieved by increasing the sensitivity of the test to hCG. However, this means that the First Response® Early Result test no longer meets the industry standard of over 99% accuracy from the day of the expected period. This is because the product is sensitive enough to detect very low concentrations of hCG which may be present in non-pregnant women. Urinary hCG concentration tends to increase as women approach the menopause, such that a test which is too sensitive is prone to produce false “pregnant” results in non-pregnant women, particularly those who are peri- or post-menopausal.7

The labelling for the First Response® Early Result pregnancy test states that as many as 4% of non-pregnant women aged 41–55 years the age at which many women enter the perimenopause (the stage leading up to the menopause where menstrual cycles become less regular and other menopausal symptoms such as hot flashes may occur) obtained false “pregnant” results when using this product.

Clearblue does not compromise on accuracy. Although highly sensitive, the Clearblue PLUS Pregnancy Test has been carefully developed to ensure over 99% accuracy from the day of the expected period. In addition to testing the Clearblue PLUS Pregnancy Test’s accuracy1 in delivering both “pregnant” and “not pregnant” results from the day of the expected period, the false-positive rate of the Clearblue PLUS Pregnancy Test was just 0.08%8 in a study using 300 urine samples from non-pregnant women who were pre-, peri- or postmenopausal. The thorough testing of the Clearblue PLUS Pregnancy Test during its development ensures that women can have a high level of confidence in the results it delivers, whether or not they are pregnant, and regardless of age.

Designed to be the easiest home pregnancy test to use

The Clearblue PLUS Pregnancy Test combines a number of innovative features that have been designed to make it the easiest home pregnancy test to use:

1Data on file. When compared to a laboratory reference method, Clearblue PLUS Pregnancy Test has been shown to be over 99% accurate from the day of the expected period when using urine samples supplied for pregnancy testing. Reference method used: AutoDELFIA quantitative hCG (Perkin Elmer).

2Data on file. Clearblue recommends that women test from the day of the expected period. However, the pregnancy hormone increases rapidly in early pregnancy and Clearblue PLUS Pregnancy Test can be used to test up to 4 days before the expected period, which is 5 days sooner than waiting for the missed period. In clinical testing, Clearblue PLUS Pregnancy Test detected the pregnancy hormone in 56% of women when testing 4 days before their expected period, 88% at 3 days before their expected period, 97% at 2 days before their expected period, and 98% at 1 day before their expected period.

3Johnson SR, Miro F, Barrett S, Ellis JE. Levels of urinary human chorionic gonadotrophin (hCG) following conception and variability of menstrual cycle length in a cohort of women attempting to conceive. Curr Med Res Opin 2009;25(3):741-8.

4Lenton EA, Neal LM, Sulaiman R. Plasma concentrations of human chorionic gonadotropin from the time of implantation until the second week of pregnancy. Fertil Steril 1982;37(6)773-8.

5Chard T. Pregnancy tests: a review. Hum Reprod 1992;7(5):701-10.

6Data on File. IPSOS Survey of Home Pregnancy Test Usage by 6284 consumers across 5 Markets (USA, Canada, UK, Germany, France), 2005.

7Snyder JA, Haymond S, Parvin CA, Gronowski AM, Grenache DG. Diagnostic considerations in the management of hCG in aging women. Clin Chem 2005 Oct;51(10):1830-5.

8Data on file. Study of 300 pre-, peri- and post-menopausal urine samples comparing the result from the Clearblue PLUS Pregnancy Test with quantitative hCG levels measured using AutoDelfia (Perkin Elmer).

§ First Response is a registered trade mark of Church & Dwight Co., Inc.