Clearblue is a brand of Swiss Precision Diagnostics that offers consumer home diagnostic products such as pregnancy tests, ovulation tests and fertility monitors.

Clearblue was introduced in 1985 with the launch of the first Clearblue Home Pregnancy Test system, which at the time was owned by Unilever. It was the world’s first “rapid home test” that gave pregnancy test results in 30 minutes and allowed a woman to take a test before going to the doctor. The test was a three-step process using a dipstick and small tray.

In 1988, Clearblue launched the first one-step pregnancy test with the invention of lateral flow technology. This one-step test gave a result in 3 minutes, subsequently reduced to a 1-minute result when Clearblue introduced the world’s first one-minute home pregnancy test in 1996. In 2003, Clearblue released the first digital pregnancy test to show the result in words ‘Pregnant’ or ‘Not Pregnant’ on a digital screen.

In 2008, Clearblue launched the Clearblue Digital Pregnancy Test with Conception Indicator, which sells in Europe.

Clearblue has also launched ovulation and fertility home diagnostic products to help women identify their fertile days and to maximize their chances of conception.

In 1989, Clearblue released the first one-step home ovulation test, enabling women to measure their surge in Luteinising Hormone (LH) to determine their most fertile days. In 1999, the brand launched the world’s first dual-hormone fertility monitor, which allowed women to measure estrone3-glucuronide (estrogen) in combination with LH.

The company created the first digital ovulation test in 2004.

In 2013, the company also began offering an ovulation test with a dual hormone read, detecting both estrogen and LH.