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1.3.4. CHECK PARAMETERS
Figure 20
Figure 21
Select the “Check Parameters” table (Fig. 20 and 21). To set a given parameter, move
the cursor on its corresponding textbox and click to confirm.
The user can enter the following information:
•
“Reagent limit (mABS)”: this parameter indicates the limit absorbance (ABS) value that is
acceptable for the reagent (maximum for increasing reactions, minimum for decreasing ones)
and it is expressed in mABS. If reagent’s absorbance is beyond this limit, the analyzer will check
the results with “O” flag (Reactive out of limit). This parameter allows monitoring reagents
quality as well as checking any variation from the specific techniques. The parameter is identical
for the serum and urine.
Note:
This control has the highest priority on all the other check flags and inhibits the automatic repetition functions.
•
“Curve Acceptance (%)”: C.C. = Correlation Coefficient. The programmable values range from
0% to 100%. This parameter is identical for both serum and urine and indicates the acceptability
limit for any data instability that is detected during programmed reading time. If this value is
exceeded, the final result will be checked with a “±
±” flag (Unstable Sample – C.C.% greater
than assigned value).
•
“Test limit (Conc)”: This parameter is used in all methodologies and it allows verification of the
final concentration of the analyses. It represents a threshold value beyond which the analyzer
detects an out-of-linearity condition (hyperactivity). With “Re-run hyperactive” check enabled
(refer to paragraph 1.3.6. “Automatic re-runs”), the analyzer will automatically re-run the test,
by pre-diluting the sample in order to bring the reaction into linearity range. The final result is
automatically multiplied by the dilution factor and will be checked with “I” flag (= Hyperactive
Sample – out of Test Limit-).
•
“Initial ABS (mABS)”: This parameter is used only for the methods “Kinetics”, “Fixed Time”
and “Initial-Rate”. It is expressed in mABS and defines the limit for the total absorbance
(reagent + serum) expected for this test. The first reading of the incubation phase is compared
with this value. If the read value is greater than the parameter, the analyzer will consider that as
a possible interference of serum in the reaction (for example: lipemic serum), thus marking the
final result with “~” flag (= Serum Interference).
•
“Final ABS (mABS)”: this parameter is used only for the methods “Kinetics”, “Fixed Time”
and “Initial-Rate”. It is the last reading of the reaction expressed in mABS; it indicates the limit
(upper limit for increasing analyses, lower limit for decreasing ones) beyond which the analyzer
detects an out-of-linearity test (hyperactivity). With “Re-run hyperactive” check enabled (refer
to paragraph 1.3.6. “Automatic Re-runs”), the analyzer will automatically re-run the test by prediluting the sample (refer to Chapter E, paragraph 1.4. “Samples”) in order to bring the reaction
into linearity range. The final result is automatically multiplied by the dilution factor and will be
checked with “A” flag (= Hyperactive Sample – out of final ABS Limit-).
Section I
Chapter C
Functions
BT2000 PL
Rev.0, Soft Ver.8
Page 22 of 31