The newly elaborated method consists in the gasometric CO determination in the blood. The extraction of CO from the blood sample (0,1-1,0 ml) is performed by means of a simple device designed by the authors. The extracted CO is determined by gas analyser ANKO-3 or Ultragas 5. The comparison between the new method and iodometric method showed very high correlation (r greater than 0,9). A discussion follows on the advantages of the new method (quick, easy, high-sensitive and precise), its use can be suggested to laboratories which are equipped with a gas analyser ANKO-3 for other purposes. The new method can be used for numerous routine analyses as well as for scientific studies.
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