Entering an Off-line Dilution Factor
Introduction
IMMAGE 800 Operations Manual A11403
Sample Programming
September 2016
Page 7-33
7
Entering an Off-line Dilution Factor
Introduction
An Off-line Dilution Factor may be entered for a sample through the Sample Options
screen. This factor represents a user prepared dilution of the sample. The Default
Dilution normally used in the calculation of concentration for an analyte should be
considered in the creation of a user prepared dilution.
The Off-Line Dilution Factor applies to the current sample only. When a sample using
an off-line dilution factor is run, the system makes
no
further dilutions. It runs the
sample "as is"; it does
not
create the default dilution or any out-of-range dilutions.
Each result is automatically multiplied by the user-entered off-line dilution factor.
Example:
To assay an IGA sample at twice the default dilution:
• To make twice the dilution of the analyte being assayed the user must know the
Default Dilution and appropriate diluting fluid for the analyte.
• Find the Default Dilution and diluting fluid for IGA in IMMAGE Immunochemistry
Systems
Chemistry Information Manual
, APPENDIX B,
Measuring Ranges/
Dilution Fluids
.
- The Default Dilution for IGA is 1:36.
- The diluting fluid for IGA is DIL1.
• Prepare the Default Dilution for the analyte being tested.
- For IGA, make a 1:36 dilution by diluting 1 part serum in 35 parts of DIL1.
• Prepare a 1:2 dilution of the previously prepared Default Dilution.
- Dilute 1 part of Default Dilution in 1 part of DIL1.
- The final dilution factor is now 1:72.
• Enter an Off-line Dilution Factor of 72 during sample programming.
• The system will produce a final result by automatically multiplying each test result
from the sample by 72.
Alternatively the user may run an off-line dilution without selecting to use this feature.
The system will perform tests using the default dilution and out-of-range dilutions as
required. The user would then need to manually multiply all test results for the sample
by the user-prepared dilution factor.