ABL800 FLEX Reference Manual 5. Performance characteristics
Performance test results - bilirubin, Continued
Imprecision
parameters
The following parameters are used to describe performance of the ABL835/30
analyzers for bilirubin measurements.
S
0
: Repeatability. Measurement short time interval variation on the same
sample.
S
D
: Day-to-day variation
S
T
: Patient-to-patient variation
S
I
: ABL-to-ABL instrumental variation
S
ABL
: ABL uncertainty. Variation including S
T
, S
I
and reference uncertainty
S
X
: Reproducibility. Total variation including S
0
, S
D
and S
ABL
The above field test regression statistics S
yx
include variations from S
0
, S
D
and S
T.
Performance
test results for
bilirubin
Macromodes: 195 µL and 85 µL from syringe and capillary:
ctBil
(µmol/L)
ctHb
(g/dL)
sO
2
(%) S
0
S
D
S
T
S
I
S
ABL
S
X
≈0
Plasma 1.1 1.4 2.2 0.4 2.3 2.9
≈0
10 100 1.9 3.1 4.0 3.2 5.1 6.3
≈0
15 100 2.3 2.9 7.4 5.5 9.2 9.9
≈0
20 100 3.4 2.6 10.9 13.0 17.0 17.5
≈200
Plasma 1.3 1.7 3.1 4.7 7.4 7.7
≈200
10 100 2.4 4.4 5.8 6.6 10.1 11.3
≈200
15 100 2.6 3.7 8.5 9.3 13.6 14.4
≈200
20 100 4.2 5.0 12.1 15.4 20.4 21.4
≈400
Plasma 1.7 2.5 4.8 9.3 12.0 12.3
≈400
10 100 3.5 6.8 9.3 12.0 16.5 18.2
≈400
15 100 3.4 5.3 11.4 15.9 20.8 21.7
≈400
20 100 6.0 8.8 15.0 21.0 27.1 29.2
Notes: a, b, c
Continued on next page
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