Abbott i-STAT 1 System Manual page 189

INTERPRETATION OF DISPLAYED RESULTS
Results Display Test results are displayed with numerical concentration values in the units
selected for the Customization profile. For patient test results, bar graphs
depicting the values in relation to reference ranges are also displayed. Reference
ranges are marked on the bars by tic marks. When all test values are within their
reference ranges, the tic marks will be centrally aligned. The bar graphs can
be used as a visual cue for distinguishing between "normal" and "abnormal"
results. Blood gas, coagulation, and immunoassay results are not displayed
with bar graphs and reference ranges.
If a value exceeds the reference range, the bar graph
may be rescaled to show the reference range and value
in relation to the measurement range.
Reportable Ranges The reportable range (sometimes referred to as the
linear range) is the concentration range over which
test results are valid. Reportable ranges programmed
into the analyzer are listed in the Cartridge and Test
Information section.
Reference Ranges Reference ranges (sometimes referred to as normal
ranges) in the default Customization profile are derived
from the literature and are listed in the Cartridge and
Test Information section as well as in the Customization
option on the analyzer. Variables such as sex, age,
heritage and other demographic factors of a population
may cause a shift in these ranges. Therefore, it is
usually recommended that each facility determine
its own reference ranges. Reference ranges can be
changed using the Customization function on the
Central Data Station or DE.
Action ranges (sometimes referred to as critical values)
Action Ranges
indicate results that require immediate attention. When
a test result falls outside the action range it is flagged
as either above the high action range  or below the low
action range . Action ranges are programmed into
the analyzer using the Customization function on the
Central Data Station and can be viewed on the analyzer
under the Customization option.
Note:
from the Martel Printer, action range flags on a Martel
printer will appear with the << >> symbol.
When testing a Celite ACT or Kaolin ACT cartridge, an option to cancel the test
ACT Cartridges
will appear on the analyzer screen. The cancel test option will only appear after
all the data entry has been completed. If the operator chooses to cancel the
test, the result will display as "0".
Art: 714374-01M
Since the  and  symbols cannot be printed
Rev. Date: 23-Feb-16
12-3