Manuale operativo
CHORUS
102 Rev. 0 del 06/2012
d) Sample titration
Near the threshold value of ACP% the times concerning the two kinetics are evaluated and factor ∆
∆∆
∆t
m
is calculated. On the basis of ∆
∆∆
∆t
ACP
(Antigen Anticomplementary Power) parameter that is detected on
the label of the strip, the titration is carried out as follows:
• Calculate: ∆t = ∆t
m
- ∆t
ACP
• Then, inserting ∆t in the titration curve, saved as Titer
vs
∆t the sample titer is calculated.
The stored titration curve is valid for all the antigens and is defined by a table like the following one
which is reported in the test method section:
Time
titer
0 - 40
Neg
41 – 100 1/8
101 – 300 1/16
301 – 500 1/32
501 – 700 1/64
701 – 1500 1/128
>1500 >1/128
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