 Refinements included a urine collector strip on their Clearblue pregnancy test that turns pink to indicate proper urine absorption, thus reducing the chance of a false-negative test by improper use.A later refinement also replacing the simple blue line indicator with an LCD display that clearly indicates the result, reducing the chance of the test line being misinterpreted by people unaccustomed to using medical test kits.In 2001 Unilever sold the company to the Inverness Medical Innovations Group.