Survey Report 2010-1 LA.pdf - NASCOLA

ECAT FOUNDATION EXERCISE 2010-1
INTERNATIONAL EXTERNAL QUALITY ASSESSMENT Page 4 of 12
PROGRAMME IN HAEMOSTASIS AND THROMBOSIS Print date: 08 June 2010
Copyright © 2010 ECAT Foundation
Labcode: 900
Overview ratio ECAT plasma / normal plasma
RATIO SCREENING n mean CV Range
APTT 249 1.51 20.5% 0.63 – 2.66
APTT SP (IL) 29 1.64 9.1% 1.40 – 2.08
HemosIL SynthASil (IL) 14 1.36 13.2% 0.95 – 1.58
Pathromtin SL (Siemens) 22 1.17 6.8% 0.95 – 1.37
Actin FSL (Siemens) 39 1.23 8.1% 0.96 – 1.43
PTT Automate / STA APTT
(Stago)
24 1.52 7.9% 1.30 – 1.78
PTT LA (Stago) 73 1.79 15.6% 0.63 – 2.66
DRVVT 293 1.47 10.9% 0.98 – 2.26
DVVtest (AD) 17 1.48 11.5% 1.16 – 1.72
LAC screen (I.L.) 64 1.53 9.2% 1.24 – 2.26
LA screen (Life Diagnostics) 38 1.51 11.9% 1.03 – 1.87
LA check (Precision Biologic) 18 1.35 7.3% 1.15 – 1.60
LA1 screen (Siemens) 109 1.43 9.1% 1.10 – 1.76
DRVVT Screen (Stago) 33 1.52 12.5% 1.11 – 1.93
KCT 23 1.86 44.1% 0.80 – 4.36
dAPTT 20 1.57 25.5% 0.98 – 2.47
dPT 31 1.46 17.1% 0.91 – 1.84
Innovin (Siemens) 15 1.64 10.4% 1.25 – 1.84
Acticlot dPT (AD) 10 1.31 10.7% 1.13 – 1.58
SCT 10 2.28 20.6% 1.34 – 2.77
Other 2 1.40 1.15 – 1.64
Remarks:
The high CV of the KCT-group in comparison to the other assay groups is remarkable.
This is probably caused by a variation in test conditions used by the different participants.
RATIO MIXING n mean CV range
APTT 183 1.34 17.2% 0.96 – 2.36
APTT SP (IL) 21 1.44 12.5% 1.00 – 1.72
Pathromtin SL (Siemens) 17 1.08 5.4% 0.96 – 1.21
Actin FSL (Siemens) 28 1.16 5.0% 1.05 – 1.29
PTT LA (Stago) 64 1.52 11.8% 1.21 – 2.36
DRVVT 168 1.19 10.1% 0.57 – 1.75
LAC screen (I.L.) 17 1.25 12.0% 1.09 – 1.75
LA screen (Life Diagnostics) 24 1.26 8.7% 0.97 – 1.43
LA1 screen (Siemens) 76 1.17 7.2% 1.01 – 1.53
DRVVT Screen (Stago) 16 1.27 16.5% 1.14 – 1.47
KCT 24 1.36 21.3% 0.82 – 1.96
dAPTT 17 1.47 17.0% 1.04 – 1.84
dPT 22 1.27 15.7% 1.08 – 1.96
Innovin (Siemens) 16 1.30 17.7% 1.08 – 1.96
SCT 4 1.61 1.41 – 1.79
Other 2 1.09 1.04 – 1.13