ubm 4dUBM is the first clinic in Sydney to partner with SneakPeek. We're now offering a clinical laboratory early gender DNA blood testing to determine you baby's gender from as early as 6The key difference is that 4D Number shows you ALL the 4D results so that you can view them at a glance. It saves you plenty of time to check the 4D results at each site. At 4D Number,