Routine determination of serum methylmalonic acid and plasma total homocysteine in Norway*

Objective: We evaluated the ratios of tHcy to total cysteine (tCys; Hcy:Cys), tHcy to creatinine (Hcy:Cre), and tHcy to tCys to creatinine (Hcy:Cys:Cre) as functional markers

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

At baseline, tHcy in plasma and folate, total cholesterol, HDL-cholesterol, and creatinine in serum were signifi- cantly higher in patients with hypothyroidism than in patients

Choline or betaine supplementation in humans reduces concentration of total homocysteine (tHcy), and plasma betaine is a strong predictor of plasma tHcy in individuals with low

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..

The aim of this study is to examine the association between plasma total homocysteine, methionine, folate, cobalamin, pyridoxal 5 0 -phosphate, riboflavin, flavin mononucleotide

In crude analyses, low plasma cobalamin and high tHcy and MMA concentrations were associated with subsequent occurrence of acute diarrhea, whereas low folate concentration was

Factors associated with plasma concentrations of cobalamin, folate, total homocysteine (tHcy), methylmalonic acid (MMA) and a combined indicator of vita- min B12 status (3cB12)