Siemens Immulite Homocysteine 2000 - Precision, Recovery, and Storage Impact

IMMULITE 2000 Homocysteine (PIL2KHO-14, 2007-11-20) 7
Solution
1
Observed
2
Expected
3
%O/E
4
4 — 20.2 — —
A 27.7 25.4 109%
B 33.0 31.7 104%
C 44.5 44.2 101%
Method Comparison 1
Kit A, µmol/L
0 10 20 30 40
IMMULITE 2000 Homocysteine
0
10
20
30
40
(IML 2000) = 1.0 (Kit A) + 0.024 µmol/L
r = 0.966
Method Comparison 2
HPLC, µmol/L
0 10 20 30 40 50
IMMULITE 2000 Homocysteine
0
10
20
30
40
50
(IML 2000) = 0.97 (HPLC) + 0.71 µmol/L
r = 0.974
Method Comparison 3
Kit B, µmol/L
5 10 15 20 25
IMMULITE 2000 Homocysteine
5
10
15
20
(IML 2000) = 0.90 (Kit B) – 0.02 µmol/L
r = 0.925
Effect of Storage Temperature on
Different Sample Types
Graph 1: Heparin
Graph 2: EDTA