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Background:  Serum, as a standard material for the determination of numerous analytes, has disadvantages. The coagulation process leads to an artificial increase of the potassium concentration of approximately 0.3 mmol/L in serum samples compared to plasma. Consequently, plasma reflects the in vivo situation more accurately. The aim of the present analyses was to establish reference intervals (RIs) for potassium using data from a population-based study for serum (PS) and plasma (PP).

laboratoriumsmedizin

Potassium – reference intervals for lithium-heparin plasma and serum from a population-based cohort / Kalium – Referenzbereiche für Lithium-Heparin-Plasma und Serum aus einer bevölkerungsbezogenen Studie