Clearblue Digital Pregnancy Test Combo Pack - 3 Tests. Combo pack for great value and extra reassurance: contains 1 Clearblue Digital Pregnancy Test with Weeks Indicator and 2 Clearblue Ultra Early Pregnancy Tests. Clearblue is over 99% accurate. Provides early detection of the pregnancy hormone. Test up to 6 days before your missed period (Ultra Early Tests). Tells you how many weeks since conception (results shown as 1-2, 2-3, 3+) - as accurate as ultrasound dating (Weeks Indicator Test). Ergonomic design and colour-changing extra wide tip for easy sampling. Unique Floodguard(TM) Technology helps reduce reported usage error by over 70% (Ultra Early Pregnancy Tests). Clearblue is the No 1 brand most recommended in a survey of doctors in the UK, with over 40 years of science.