title: Erroneous results due to blood sampling from a permanent intravenous port.
authors.forename: A
authors.initials: A
authors.lastname: Larsson
authors.forename: A
authors.initials: A
authors.lastname: Kreuger
mesh_terms: D001800:Blood Specimen Collection / Q000379:methods / Q000592:standards*; D002405:Catheterization, Central Venous / Q000009:adverse effects / Q000592:standards*; D002675:Child, Preschool; D004866:Equipment Contamination; D006801:Humans; D008297:Male; D012680:Sensitivity and Specificity