Test for the quantitative determination of potassium in
heparinized plasma or serum with Reflotron.
The human body contains about 50 mmol potassium per kg body weight. About
98 % of this is contained in the cells, only 2 % in the extracellular space. This
concentration gradient between the intracellular and extracellular space is
essential in order to maintain the membrane potential and the excitability of the
cells. The daily requirement of 30 – 50 mmol potassium is satisfied by dietary intake,
absorption takes place mainly in the small intestine. About 90 % of potassium
excretion takes place via the kidneys and about 10 % with the faeces.
Disturbances of potassium homeostasis, in whichever direction, are relatively
poorly compensated and can rapidly lead to life-threatening situations particularly
with regard to cardiac function.
Available in a tube of 30 test/strips.