Serum creatinine μmol/L Serum creatinine μmol/L Serum creatinine μmol/L Serum creatinine μmol/L
1st trimester (4-12 weeks) 1st trimester (4-12 weeks) End of 2nd trimester (24-27th weeks) End of 2nd trimester (24-27th weeks)
PoG at the first visit N Mean SD Mean SD
4-7 weeks 150 54.4 8.7 47.2 8.1
8-9 weeks 238 52.8 8.6 47.5 7.3
10-12 weeks 136 49.6 8.9 47.0 6.9
Total 524 52.4 8.9 47.3 7.4