RADIOMETER ABL800 FLEX - Interference Tests

ABL800 FLEX Reference Manual 5. Performance characteristics
Interference tests
pH/blood gas
The following interference results are found for the pH and blood gas electrodes:
Substance Test Conc. Interference on pO
2
Electrode
Halothane 3 % 5 % increased sensitivity
Intralipid (20 % solution) in a concentration greater than 4 % (the final Intralipid
level being 0.8 %) will give interference on pH measurements.
Electrolytes
The following interference results are found for the electrolyte electrodes:
Interference on…
Substance Test Conc. cK
+
(4 mmol/L
level)
cNa
+
(150 mmol/L
level)
cCa
2+
(1.25 mmol/L
level)
cCl
−
(110 mmol/L
level)
Li
+
4 mmol/L 0 0 0
K
+
12 mmol/L
−1 −0.01
Na
+
100 - 180
mmol/L
0.1 to −0.1
NH
4
+
1 mmol/L 0 0
Ca
2+
5 mmol/L 0
Mg
2+
5 mmol/L 0 0 0.05
Br
−
10 mmol/L 41
F
−
1 mmol/L 0
I
−
3.0 mmol/L 30-90
ClO
4
–
1.5 mmol/L 8-30
HCO
3
–
25-50 mmol/L
0.1 mmol/L Cl
−
per mmol/L
HCO
3
–
Lactate 10 mmol/L 0
Acetyl-
salicylic acid
3.0 mmol/L 2
Continued on next page
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