User's Manual

Table Of Contents
i15 Blood Gas and Chemistry Analysis System User Manual Patient Analyzing
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Chapter 5 Patient Analyzing
NOTE:
Take safety measures when working with biological samples, such as wearing
approved gloves, etc.
5.1 Sample Collection and Preparation
5.1.1 Sample Collection
Blood samples should be collected according to proper medical guidelines containing collection
details, such as site selection, collection procedures, sampling devices, sample handling, etc.
Sterile techniques should be followed to prevent the site from being contaminated.
Handle blood samples and collection devices with care, and wear approved protective
gloves to avoid direct contact with samples.
WARNING
NOTE:
Only fresh whole blood samples are recommended for use.
When taken for electrolyte analysis, venous samples should not be collected from a
central venous catheter containing silver sulfadiazine or chlorhexidine, because they
have a great influence on sodium levels.
Samples should be collected by trained professionals.
For mixed venous samples, the system reports only pO
2
result.
5.1.2 Anticoagulants
Only those sample devices containing the proper amount of calcium-titrated (balanced) heparin or
lithium heparin as the anticoagulant should be used to collect whole blood samples. If
calcium-titrated (balanced) heparin is used as an anticoagulant, the minimum heparin-to-blood
ratio should be 2.3 units of heparin per 1.0mL of blood sample. If a sample is analyzed for
ionized calcium, the maximum heparin-to-blood ratio should be 15 units of heparin per 1.0mL of
blood sample; if not, the maximum heparin-to-blood ratio should be 50 units of heparin per
1.0mL of blood sample.
If there are clots in the blood sample, discard it and collect samples again.
CAUTION