Stability of vitamins A, C, E, carotenoids, lipids, and testosterone in whole blood stored at 4 °C for 6 and 24 hours before separation of serum and plasma. - Key,T.JA.; Oakes,S.; Davey,G.; Moore,J.; Edmond,L.M.; McLoone,U.J.; Thurnham,D.I. (Cancer Epidemiol Biomarkers Prev, 1996)