Ca (Calcium) ionized

serum or heparin-plasma 0.5 ml (centrifuged immediately (plasma) or soon after sampling (serum), pipetted off and under exclusion of air)

ISE

2 - 3 days

• Ionised Ca represents the biologically active part of the total calcium.
• The sample should be collected without air (e.g. vacutainer system). The instructions can be requested from us.