ABL800 FLEX Operator's Manual 12. Sampling
Storage and preparation prior to analysis
Storage recom-
mendation
Radiometer recommends the following for samples obtained in plastic and glass
syringes:
Material Storage recommendation
Plastic syringe
•
Storage should be avoided whenever possible or, at
least, kept to a minimum
•
If it is not possible to analyze the sample immediately,
analyze it within 30 minutes after collection [5, 6, 7, 8,
9, 10, 11]
•
Recommended sample storage temperature: room
temperature [5, 6, 8]
Samples with expected high pO
2
values or for special
studies like shunt studies should be analyzed
immediately or within 5 minutes. The use of glass
syringes can also be considered [5, 7, 8]
•
Glass syringe
•
Storage should be avoided whenever possible or, at
least, kept to a minimum
•
If it is not possible to analyze the sample immediately,
analyze it within 30 minutes after collection when stored
at room temperature [5, 12]
•
Alternatively, store the sample in ice-water (0-4 °C ).
The storage time should not exceed 1 hour [13]
Samples with expected high pO
2
values or for special
studies like shunt studies should be analyzed
immediately or within 5 minutes [13]
•
Radiometer recommends the following for samples obtained in plastic and glass
capillaries:
Material Storage recommendation
Plastic capillary Analyze the sample within 10 minutes. Note that for
samples with pO
2
> 80 mmHg (10.7 kPa) a positive bias
from 1 to 9 % is observed. The bias depends on the pO
2
,
pH and time.
Glass capillary Analyze the sample within 10 minutes. If storage is
unavoidable, store the sample horizontally at 0-4
o
C for
maximum 30 minutes.
Continued on next page
12-9
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