Core ANC service provision attributes at Zambian ANC facilities (n=1299). The percentage of Zambian ANC facilities fulfilling four core antenatal service provision attributes is shown separately. Most facilities offer ANC 1–2 days per week and provide 3–4 ANC functions, both criteria for adequate level of service provision. However, nearly half of all ANC facilities do not offer any ANC screening tests which was considered inadequate. For each attribute, less than 40% of facilities fulfilled the criteria for optimum level of ANC provision.