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Clin Chim Acta ; 541: 117246, 2023 Feb 15.
Article in English | MEDLINE | ID: mdl-36754193

ABSTRACT

BACKGROUND AND AIMS: Glycated albumin (GA) may assess glycometabolic control over a short period of time respect to HbA1c, and its use to screen for gestational diabetes in pregnancy has been suggested. To this regard few data on reference intervals (RI) for GA on Europid women have been collected, only from cross-sectional investigations. Aim of this work has been to collect trimester-specific RI for GA in physiological pregnancies, following a longitudinal prospective study. METHODS: Forty-five healthy pregnant Europid women have been enrolled for whom a GDM screening test was scheduled at 24-28 weeks, in 5 different Italian centers. Only those negative to the OGTT were included. The women had 4 successive visits at 6-10 weeks of gestation, at 16-18 weeks, at 24-28 weeks and at the end of pregnancy. ALT, AST, total bilirubin, C-reactive protein, cholinesterase, creatinine, GGT, glycated albumin, iron, total serum proteins, transferrin were measured in duplicate on aliquots of serum samples by a central laboratory. RESULTS: The RI (2.5-97.5 percentiles) for GA were 11.1-14.8 % (I visit), 10.9-15.6 % (II visit), 10.6-14.1 % (III visit) and 10.7-14.3 % (IV visit). The RI of other biomarkers confirmed previously published data. The RI for serum cholinesterase we present are novel, and were 5049-9906 U/L (Iv), 4212-8965 U/L (IIv), 3518-8470 U/L (IIIv) and 3945-8727 U/L (IVv). CONCLUSIONS: Trimester-specific RI are important for using GA and serum cholinesterase in pregnancy. However, considering the high inter-individual variability of both markers, the use of longitudinal interpretations of the individual variations of both proteins during pregnancy should be preferred.


Subject(s)
Blood Glucose , Diabetes, Gestational , Pregnancy , Female , Humans , Prospective Studies , Blood Glucose/metabolism , Glycated Serum Albumin , Cross-Sectional Studies , Glycated Hemoglobin , Glycation End Products, Advanced , Serum Albumin/metabolism
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