ABL800 FLEX Reference Manual
6. Parameters
General information,
Continued
Symbols
(continued)
3. (System)
Specification of the system
B for blood
P for plasma
a for arterial blood
v
–
for mixed venous blood
A for alveolar air
T
for patient temperature
Example:
p
O
2
(a)
quantity
component
system
The parameters are listed by symbol in three groups: measured, input, and derived.
Ranges and
limits
The following ranges are used:
Range Description
Measuring The
measuring range
for a parameter is the range within which the
analyzer is physically capable of measuring. The measuring range
corresponds to the "range of indication" as defined in the
"International vocabulary of basic and general terms in metrology
(VIM).
Reportable Is user-defined; is equal to or narrower than the measuring range.
Can be selected for all measured and derived parameters.
Reference
"Reference ranges are valuable guidelines for the clinician, but they
should not be regarded as absolute indicators of health and disease.
Reference ranges should be used with caution since values for
‘healthy’ individuals often overlap significantly with values for
persons afflicted with disease. In addition, laboratory values may
vary significantly due to methodological differences and mode of
standardization" [10].
Ref. 10 has been the source for the reference ranges given in this
section. In some cases the values are taken from other sources
marked by their reference number.
When possible the reference ranges for arterial blood have been
listed. Reference ranges must be used with caution as they depend on
a number of factors, such as sex, age, and normal physiological
condition.
Critical limits are user-defined and can be entered into the analyzer software - see
Chapter 3: Setup Programs (section Analysis Setup)
in the
Operator’s Manual
.
Continued on next page
6-3
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