Roche cobas b 123 - Page 213

Roche Diagnostics
Instructions for Use · Version 13.0 213
cobas b 123 POC system 7 Quality control
Multirules
Set 2 Rule 1, Rule 2 and Rule 4.
Figure 7-43 Multirules set 2
Set 3 Rule 1, Rule 2, Rule 4 and Rule 5.
Figure 7-44 Multirules set 3
A (Rule 1 = NOK) AND ((Rule
2 = OK) OR (Rule 4 = OK))
= OK
B (Rule 1 = NOK) AND ((Rule
2 = OK) OR (Rule 4 = OK))
= OK
C (Rule 1 = NOK) AND ((Rule
2 = OK) OR (Rule 4 =
NOK)) = NOK
OK OK
OUT OF
CONTROL 4
+3σ
+2σ
–2σ
X
M
–3σ
+3σ
+2σ
–2σ
X
M
–3σ
+3σ
+2σ
–2σ
X
M
–3σ
A (Rule 1 = OK) AND ((Rule 2
= OK) OR (Rule 4 = OK)
OR (Rule 5 = OK)) = OK
B (Rule 1 = OK) AND ((Rule 2
= OK) OR (Rule 4 = OK)
OR (Rule 5 = NOK)) = OK
C (Rule 1 = NOK) AND ((Rule
2 = OK) OR (Rule 4 = OK)
OR (Rule 5 = NOK)) = NOK
OK OK
OUT OF
CONTROL 5
+3σ
+1σ
–1σ
–3σ
X
M
+3σ
+1σ
X
M
–1σ
–3σ
+3σ
+1σ
X
M
–1σ
–3σ