Maori and Pacific women have the lowest uptake of completed first versus second trimester screening after adjusting for age, deprivation and DHB. Research is required to understand if this relates to characteristics of the carer making the offer of screening, language and/or cultural barriers to care or specific collective cultural or religious views held by women from these ethnicities. The lower completed first trimester versus second trimester prenatal screening in deprived areas, as well as variation by DHB, may relate to the availability of ultrasound and/or laboratory services in specific regions. Cost may be a contributing factor to inequity in timing of completed prenatal screening uptake, as first trimester screening incurs a part-charge to the individual, while second trimester screening is fully funded. Systemic factors within the NZ maternity model of care may also be contributory with a potential disconnect occurring for the woman between primary medical care and later registration with a Lead Maternity Carer in the first trimester.