Beckman Coulter COULTER LH 750 System, Reference

Page: 106 / 120

PN 4277248DD
GLOSSARY-12
GLOSSARY
Predilute Diltion of a sample prior to analysis on the analyzer. The Predilute mode on the
LH 700 Series may be used to dilute specimens that exceed the reportable range,
or to run a citrated tube when clumped platelets are suspected. The Predilute
mode runs in the CBC test mode via manual aspiration only. You may enter
dilution factors from 1.1 to 5.0. The sample results are automatically multiplied
by the dilution factor entered. After running a dilution, the Analyzer
automatically disables predilute. The minimum amount of blood with which to
make a dilution is 75 µL. Remember that Manual mode requires 200 µL of
sample for aspiration.
Primary Mode The closed-vial method of running a sample. You place a closed tube sample in
a cassette and place the cassette on the LH 700 Series loading bay. The LH 700
Series automatically reads the cassette label and tube label (if present) and
aspirates the sample.
Also called: Automatic aspiration mode, closed-vial mode, automatic sampling
mode.
Print Profile A set of characteristics that define what you want printed and transmitted for
sample runs. You can set up print profiles as part of System Setup.
Also called: Reports, Reporting Options
psi Pounds per square inch, a unit of pressure measurement.
QC (Quality Control) A comprehensive set of procedures your laboratory uses to ensure that the
instrument is working accurately and precisely.
Ramp Test The ramp test is performed as part of the automatic startup cycles. If any test
value exceeds the reference value by 1% or more, the test value appears in red
on the Workstation screen and is flagged with an H (high) or L (low).
RBC (Red Blood Cell) Red Blood Cell count results from the CBC analysis. This parameter is measured
directly using the Coulter Principle.
RBC = n x 10
6
cells/µL
RBC Histogram Misleading results can occur if you estimate the number of cells from the
distribution curves because curves show only the relative, not the actual,
number of cells in each size range. Do not estimate the number of cells from the
distribution curves.
An RBC distribution curve. The normal curve ranges from 36 to 360 fL. The
display starts at 24 fL.
RDW (Red
Distribution Width) The size distribution spread of the erythrocyte population derived from the RBC
histogram. Expressed as coefficient of variation (%)
Record A collection of related information, for example, sample identification and
results information, stored in the database and treated as a unit.
Reflex Manager List A list automatically generated by the Workstation based on sample result
criteria set up by your laboratory. You can use this list as a management tool to
allow automation of post-analysis decisions. As part of setting up the Reflex
Manager List, you define the decision criteria and the follow-up action required.