RADIOMETER ABL90 FLEX - Interference Tests; Ph;Blood Gas

7. Performance characteristics ABL90 FLEX reference manual
7-20
The same data as above but depicted in a Bland-Altman plot below.
Lines indicate “Mean” and +/- “15 umol or 10%”. Values are in µmol/L. Difference =
ABL90 – Modular.
Interference tests
The results from the interference tests are given as the deviation from the correct result
[Ref. 14].
The following interference results are found for the pH and blood gas electrodes:
Interference on ...
Substance
Test
Concentration
pH
(level 7.4)
pCO
2
pO
2
mmHg
Test matrix
2% <0.010 N/A <1 Blood/Aqueous Intralipid
5% <0.010 N/A <1 Blood/Aqueous
Fluorescein 400 mg/L N/A N/A <1 Blood
K
+
17 mM <0.010 N/A N/A Blood
Na
+
190 mM <0.010 N/A N/A Blood
Ca
2+
5.5 mM <0.010 N/A N/A Blood
pH/blood gas
-50
-40
-30
-20
-10
0
10
20
30
40
50
0 100 200 300 400
ctBil
Difference