Specimen-dependent effects on the apparent analytical quality in surveys of Nordic clinical chemistry laboratories.
In the 1979 and 1980 Nordic surveys of analytical quality in clinical chemistry laboratories it was observed that measures of imprecision and bias showed specimen-associated differences for some analytes. These observations are presented and discussed in the paper.
D001774:Blood Chemical Analysis / Q000379:methods / Q000592:standards; D001800:Blood Specimen Collection / Q000379:methods; D002624:Chemistry, Clinical / Q000592:standards*; D005188:False Negative Reactions; D005189:False Positive Reactions; D006801:Humans; D009391:Nephelometry and Turbidimetry; D011786:Quality Control