Antigen Excess Testing
How Antigen Excess Testing is Performed
Theory of Operations
IMMAGE 800 Operations Manual A11403
Page 3-10
September 2016
How Antigen Excess Testing is Performed
The system performs antigen excess testing by adding additional antigen to the
completed reaction.
Figure 3.8
Rate Response versus Reaction Time
Table 3.1
Antigen Excess Testing
If unbound Ab is... the addition of more Ag will
result in...
and the IMMAGE 800 will...
present
an increase in rate response, as
indicated by the solid line in
Figure 3.8
use the initial rate response to
calculate the final result.
not
present
no
increase in rate response,
as indicated by the broken line
in Figure 3.8
automatically rerun the
sample at the next higher
dilution and test for antigen
excess until a final result is
obtained.
1. X = Reaction time (in seconds)
2. Y = Rate response
3. Response if antibody excess
4. Response if antigen excess
Y
X
3
1
4
2
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