PMID- 38538689 OWN - NLM STAT- MEDLINE DCOM- 20240329 LR - 20240330 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 14 IP - 1 DP - 2024 Mar 27 TI - Development of a formula for estimated glomerular filtration rate in pregnant women from physiological hyperfiltration of serum creatinine. PG - 7229 LID - 10.1038/s41598-024-57737-0 [doi] LID - 7229 AB - Increased body fluids during pregnancy complicates the application of estimated glomerular filtration rate (eGFR) formulas that are based on body surface area. Furthermore, gestational renal dysfunction cannot be identified if the serum creatinine (SCr) concentration is within the non-pregnant reference interval (RI) despite inadequate pregnancy-related renal hyperfiltration. 1484 SCr measurements from 957 healthy pregnant women were collected. The average SCr value of gestational week (GW) 0-3 was the representative SCr value of non-pregnant status. While the distribution of SCr measurements varied across GWs, it was transformed into a normal distribution using the bootstrap resampling method. A polynomial linear regression method was applied to achieve a continuous and smooth transformation of values. The normally distributed SCr values of each GW were compared to the non-pregnant status, leading to the calculation of SCr hyperfiltration. The final equation, (2 - SCr (mumol/L) / 55.25) x 103.1 x 55.25/(56.7 - 0.223 x GW - 0.113 x GW(2) + 0.00545 x GW(3) - 0.0000653 x GW(4)), and reference intervals for both SCr and eGFR for each GW were obtained. These RIs and novel equations can be effectively used to monitor renal dysfunction in pregnant women. CI - (c) 2024. The Author(s). FAU - Ahn, Kwangjin AU - Ahn K AD - Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Lee, Taesic AU - Lee T AD - Department of Family Medicine, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Kang, Jieun AU - Kang J AD - Department of Obstetrics and Gynecology, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Choi, Seong Jin AU - Choi SJ AD - Department of Obstetrics and Gynecology, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Hwang, Sangwon AU - Hwang S AD - Department of Precision Medicine, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Seo, Dong Min AU - Seo DM AD - Department of Medical Information, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Cho, Jooyoung AU - Cho J AD - Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. FAU - Uh, Young AU - Uh Y AUID- ORCID: 0000-0002-2879-7870 AD - Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju-si, Republic of Korea. u931018@yonsei.ac.kr. LA - eng PT - Journal Article DEP - 20240327 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - AYI8EX34EU (Creatinine) SB - IM MH - Pregnancy MH - Humans MH - Female MH - Glomerular Filtration Rate/physiology MH - Creatinine MH - *Pregnant Women MH - Kidney MH - *Kidney Diseases PMC - PMC10973345 COIS- The authors declare no competing interests. EDAT- 2024/03/28 06:46 MHDA- 2024/03/29 06:45 PMCR- 2024/03/27 CRDT- 2024/03/28 00:22 PHST- 2023/12/21 00:00 [received] PHST- 2024/03/21 00:00 [accepted] PHST- 2024/03/29 06:45 [medline] PHST- 2024/03/28 06:46 [pubmed] PHST- 2024/03/28 00:22 [entrez] PHST- 2024/03/27 00:00 [pmc-release] AID - 10.1038/s41598-024-57737-0 [pii] AID - 57737 [pii] AID - 10.1038/s41598-024-57737-0 [doi] PST - epublish SO - Sci Rep. 2024 Mar 27;14(1):7229. doi: 10.1038/s41598-024-57737-0.