ALB and Alzheimer disease: Total protein 3-nitrotyrosine levels showed a high inter individual variability and there were no statistically significant differences observed between the median values of total 3-nitrotyrosine content: median (IQR) AD, 0.29 (0.19–0.57) pmol nitrated albumin equivalents/mg protein; VaD, 0.36 (0.18–0.40) pmol/mg; and ND controls 0.3 (0.22–0.55) pmol/mg.