The aim of this guideline is to improve the standard of, and to reduce regional variation in, the care of women with CKD in the UK who are pregnant, planning a pregnancy or post-partum. Scope This guidance covers the care of women with CKD (including renal transplant recipients) who are planning a pregnancy, pregnant, or in the post-partum period. It also covers contraception and fertility for women with CKD. This guideline can be used in the following settings: General practice Community and hospital antenatal clinics Antenatal, labour and postnatal wards Renal outpatients Renal wards Dialysis units The target audience and intended users of this guideline are nephrologists, obstetricians, obstetric physicians, midwives, renal nurses, pharmacists, specialist trainees in both nephrology and obstetrics, and women with CKD who are pregnant or considering pregnancy. Qualitative data on the experience of pregnancy and renal disease is provided in Appendix 1. A summary of clinical responsibility for elements of the guideline is provided in Appendix 2. The clinical issues covered in this guideline are: Structure of care Medication Pre-pregnancy care 3.1.Contraception 3.2.Fertility 3.3.Pre-pregnancy counselling and optimisation for pregnancy Pregnancy care 4.1 Assessment of renal function in pregnancy 4.2 Antenatal care 4.3 Pre-eclampsia prophylaxis 4.4 Blood pressure management 4.5 Thromboembolism prophylaxis 4.6 Anaemia 4.7 Bone health 4.8 Renal biopsy 4.9 Peripartum care 4.10 Postnatal care Pregnancy Care Assessment of renal function in pregnancy Guideline 4.1.1 We recommend renal function in pregnancy is assessed using serum creatinine concentrations as estimated GFR (eGFR) is not valid for use in pregnancy (1C). Guideline 4.1.2 We recommend women with CKD have formal quantification of proteinuria in pregnancy (1D). Guideline 4.1.3 We recommend quantification of proteinuria is undertaken by protein:creatinine ratio (uPCR) or albumin:creatinine ratio (uACR). Twenty-four hour urine collection for quantification of protein is not required (1B). Antenatal care Guideline 4.2.1 We suggest pregnant women with CKD who have not had pre-pregnancy counselling by the MDT are referred to the MDT and receive the same counselling and optimisation as for women attending pre-pregnancy (2D). Guideline 4.2.2 We recommend pregnant women with CKD receive routine antenatal care, in addition to specialist input (1D). Guideline 4.2.3 We recommend pregnant women with CKD be referred for assessment by a consultant obstetrician (1D). Guideline 4.2.4 We recommend pregnant women with CKD have access to usual trisomy screening with specialist interpretation of high-risk results (1C). Guideline 4.2.5 We recommend women with CKD exposed to teratogenic drugs in the first trimester are referred to a specialist fetal medicine unit (1D). Guideline 4.1.6 We recommend pregnant women with CKD have scans to assess fetal growth and wellbeing in the third trimester (1C). Guideline 4.2.7 We recommend pregnant women taking prednisolone and/or calcineurin inhib...