PMID- 28105762 OWN - NLM STAT- MEDLINE DCOM- 20180427 LR - 20210109 IS - 1098-2825 (Electronic) IS - 0887-8013 (Print) IS - 0887-8013 (Linking) VI - 31 IP - 6 DP - 2017 Nov TI - Establishment of reference intervals for complete blood count parameters during normal pregnancy in Beijing. LID - 10.1002/jcla.22150 [doi] LID - e22150 AB - OBJECTIVE: To observe the changes of complete blood count (CBC) parameters during pregnancy and establish appropriate reference intervals for healthy pregnant women. METHODS: Healthy pregnant women took the blood tests at all trimesters. All blood samples were processed on Sysmex XE-2100. The following CBC parameters were analyzed: red blood cell count (RBC), hemoglobin (Hb), hematocrit (Hct), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), red blood cell distribution width (RDW), platelet count (PLT), mean platelet volume (MPV), platelet distribution width (PDW), white blood cell count (WBC), and leukocyte differential count. Reference intervals were established using the 2.5th and 97.5th percentile of the distribution. RESULTS: Complete blood count parameters showed dynamic changes during trimesters. RBC, Hb, Hct declined at trimester 1, reaching their lowest point at trimester 2, and began to rise again at trimester 3. WBC, neutrophil count (Neut), monocyte count (MONO), RDW, and PDW went up from trimester 1 to trimester 3. On the contrary, MCHC, lymphocyte count (LYMPH), PLT, and MPV gradually descended during pregnancy. There were statistical significances in all CBC parameters between pregnant women and normal women, regardless of the trimesters (P<.001). The median obtained were (normal vs pregnancy) as follows: RBC 4.50 vs 3.94x10(12) /L, Hb 137 vs 120 g/L, WBC 5.71 vs 9.06x10(9) /L, LYMPH% 32.2 vs 18.0, Neut% 58.7 vs 75.0, and PLT 251 vs 202x10(9) /L. CONCLUSION: The changes of CBC parameters during pregnancy are described, and reference intervals for Beijing pregnant women are demonstrated in this study. CI - (c) 2017 Wiley Periodicals, Inc. FAU - Li, Aiwei AU - Li A AUID- ORCID: 0000-0003-1079-7511 AD - Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China. FAU - Yang, Shuo AU - Yang S AD - Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China. FAU - Zhang, Jie AU - Zhang J AD - Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China. FAU - Qiao, Rui AU - Qiao R AD - Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China. LA - eng PT - Journal Article DEP - 20170120 PL - United States TA - J Clin Lab Anal JT - Journal of clinical laboratory analysis JID - 8801384 SB - IM MH - Adolescent MH - Adult MH - Beijing/epidemiology MH - Blood Cell Count/*standards MH - Female MH - Humans MH - Middle Aged MH - *Pregnancy/blood/statistics & numerical data MH - Pregnancy Complications, Hematologic MH - Prenatal Care MH - Reference Values MH - Young Adult PMC - PMC6816986 OTO - NOTNLM OT - complete blood count OT - pregnancy OT - reference interval EDAT- 2017/01/21 06:00 MHDA- 2018/04/28 06:00 PMCR- 2017/01/20 CRDT- 2017/01/21 06:00 PHST- 2016/11/07 00:00 [received] PHST- 2016/12/23 00:00 [accepted] PHST- 2017/01/21 06:00 [pubmed] PHST- 2018/04/28 06:00 [medline] PHST- 2017/01/21 06:00 [entrez] PHST- 2017/01/20 00:00 [pmc-release] AID - JCLA22150 [pii] AID - 10.1002/jcla.22150 [doi] PST - ppublish SO - J Clin Lab Anal. 2017 Nov;31(6):e22150. doi: 10.1002/jcla.22150. Epub 2017 Jan 20.