Assertion: ionized calcium | /r/AtLocation | vitro
Facets:
value: from underfilled tubes
type: TRANSITIVE-OBJECT
value: erroneously
type: MANNER
Source sentences:
text: Erroneously low ionized calcium can also occur in vitro from underfilled tubes, or tubes left uncapped before measurement, because the loss of carbon dioxide increases sample pH and increases protein-bound calcium.