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자료유형
학술저널
저자정보
Minović Isidor (Department of Laboratory Medicine University of Groningen University Medical Center Groningen Groni) Dikkeschei Lambert D. (Department of Laboratory Medicine Isala Zwolle The Netherlands) Vos Michel J. (Department of Laboratory Medicine University of Groningen University Medical Center Groningen Groni) Kootstra-Ros Jenny E. (Department of Laboratory Medicine University of Groningen University Medical Center Groningen Groni)
저널정보
대한진단검사의학회 Annals of Laboratory Medicine Annals of Laboratory Medicine 제41권 제5호
발행연도
2021.9
수록면
485 - 488 (4page)
DOI
10.3343/alm.2021.41.5.485

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Folate analysis in plasma is affected by hemolysis, which can lead to biased results. However, the degree of hemolysis that is considered acceptable is unclear. We explored the relationship between folate concentration and degree of hemolysis. Heparin plasma samples (N=77, hemolysis index ≤10 μmol/L) were spiked with increasing amounts of corresponding patient-specific hemolysate. Subsequently, the folate concentration and hemolysis index were measured using two Roche Cobas platforms, and their incremental relationship was investigated. The folate concentration ranged from 2.9 to 30.9 nmol/L with a median (interquartile range) of 11.4 (8.6?19.1) nmol/L. The linear relationship between the increments in folate concentration and hemolysis index was approximated by the function y=1.86x+1.56 (R2=0.996), where x represents the laboratory-specific critical difference in folate concentration, which can be calculated from the analytical variation of the employed folate assay(s), and y represents the hemolysis threshold. The hemolysis threshold did not significantly differ between the tertiles of plasma folate concentration (P=0.10). In conclusion, we have provided an evidence-based approach that can be used to reliably interpret folate concentrations in hemolytic samples, independent of the patient’s folate status.

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