RT Journal Article SR Electronic T1 Spurious increase in plasma potassium concentration and reduction in plasma calcium due to in vitro contamination with liquid potassium edetic acid at phlebotomy. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 588 DO 10.1136/jcp.40.5.588 VO 40 IS 5 A1 Fitzpatrick, M F A1 Newell, J A1 Grimes, H A1 Egan, E L YR 1987 UL http://jcp.bmj.com/content/40/5/588.abstract AB