Vacutainer contaminations revisited.
D001774:Blood Chemical Analysis; D001800:Blood Specimen Collection / Q000295:instrumentation*; D002118:Calcium; D002412:Cations / Q000097:blood*; D002849:Chromatography, Gas; D006801:Humans; D008274:Magnesium; D012964:Sodium
D002412:Cations; D012964:Sodium; D008274:Magnesium; D002118:Calcium