Journal of Chromatography B

We investigated the stability of 32 biomarkers related to one-carbon metabolism and B vitamin function in serum and plasma (EDTA, heparin, and citrate) stored at room

For serum or plasma analyte stability, tubes were centrifuged either immediately or 30 min after phlebotomy, depending on whether the sample was plasma or serum, and

The present study was designed to determine the kinetics of folate loss in human serum and plasma (collected into tubes containing EDTA, heparin, or citrate) at room temperature and

The present study was designed to determine the kinetics of folate loss in human serum and plasma (collected into tubes containing EDTA, heparin, or citrate)

The matrix effect was exhaustively evaluated to see the adequacy of the method to the ana- lysis of serum samples and a microwave assisted derivatization proce- dure was used.. In

Relation between serum total cobalamin concentrations and the percentage of subjects with elevated serum methylmalonic acid (MMA; > 0.26 mol/L), elevated total homocysteine

Serum med gel Serum uten gel Plasma fra citrat-blod Heparin blod EDTA-blod Plasma fra EDTA-blod uten gel

The fluorescence yield of MMA in EDTA-plasma (4 mmol/L EDTA), serum, and serum supplemented with EDTA (4 mmol/L) was determined in the presence of various concentrations of ZnCI2..