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Auto Serum Index/ORDAC
Auto ORDAC
UniCel DxC Systems Instructions For Use A13914
System Setup Options
October 2005
Page 4-5
4
Auto Serum Index/ORDAC
Auto ORDAC
Auto ORDAC permits the enabling or disabling of the automatic Overrange Detection
and Correction (ORDAC) function for specified chemistries (refer to the Synchron
Clinical Systems Chemistry Information Manual for a list of chemistries offering
ORDAC). When a chemistry result exceeds the instrument printable range and Auto
ORDAC is enabled, the sample will automatically rerun with either:
• a smaller sample size or
• an on-line sample dilution (chemistry dependent).
When Auto ORDAC for Ig-A and Haptoglobin is enabled, the URDAC feature is also
enabled. Ig-A and Haptoglobin URDAC is used to analyze samples with
concentrations below the analytical range. In this case, the system takes a larger
sample volume.
(The manual ORDAC function in Sample Programming is used for samples which are
known to exceed the usable range. Chemistries designated with manual ORDAC at the
time of programming are run at the ORDAC sample volume.)
From the Setup Screen, select <1> Auto Serum Index/ORDAC to enable or disable
ORDAC. The default for Auto ORDAC is OFF.
The Automatic ORDAC screen may be viewed at any time, however the system must
be in Standby to modify the ORDAC selection.
NOTICE
The analytical ranges for each analyte are system limits found in the respective
CISs. These are the ranges that Beckman Coulter has verified can be achieved by
the system. There is no flagging associated with values exceeding these limits.
The instrument printable ranges for each analyte are internal system limits.
These ranges actually exceed the analytical ranges by a certain limit. This allows
for precision variations and still permits a result to print even though it exceeds
the analytical range slightly. Results outside this range will be suppressed. The
suppressed results will be flagged OIR HI or OIR LO (
O
ut of
I
nstrument
R
ange).