Biological markers of alcohol consumption in alcoholised drivers: Comparison of capillary electrophoresis (CZE CDT) and a direct immunoassay (N Latex CDT) with the traditional method of anion-exchange chromatography-immunoturbidimetry (%CDT TIA).
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Serval ID
serval:BIB_72E09462D03D
Type
Inproceedings: an article in a conference proceedings.
Publication sub-type
Poster: Summary – with images – on one page of the results of a researche project. The summaries of the poster must be entered in "Abstract" and not "Poster".
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Publications
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Title
Biological markers of alcohol consumption in alcoholised drivers: Comparison of capillary electrophoresis (CZE CDT) and a direct immunoassay (N Latex CDT) with the traditional method of anion-exchange chromatography-immunoturbidimetry (%CDT TIA).
Title of the conference
Tri-Annual Meeting of the International Council on Alcohol, Drugs and Traffic Safety
Address
Oslo, Norway, August 22-26, 2010
Publication state
Published
Issued date
2010
Language
english
Abstract
Objectives: The aim of this study was to compare specificity and sensitivity of different biological markers that
can be used in a forensic field to identify potentially dangerous drivers because of their alcohol
habits.
Methods: We studied 280 Swiss drivers after driving while under the alcohol influence. 33 were excluded for
not having CDT N results, 247 were included (218 men (88%) and 29 women (12%). Mean age was
42,4 (SD:12, min: 20 max: 76). The evaluation of the alcohol consumption concerned the month
before the CDT test and was considered as such after the interview: Heavy drinkers (>3 drinks per
day): 60 (32.7%), < 3 drinks per day and moderate: 127 (51.4%) 114 (46.5%), abstinent: 60 (24.3%)
51 (21%). Alcohol intake was monitored by structured interviews, self-reported drinking habits and
the C-Audit questionnaire as well as information provided by their family and general practitioner.
Consumption was quantified in terms of standard drinks, which contain approximately 10 grams of
pure alcohol (Ref. WHO).
Results: comparison between moderate (less or equal to 3 drinks per day) and excessive drinkers (more than
3 drinks)
Marker ROC area 95% CI cut-off sensitivity specificity
CDT TIA 0.852 0.786-0917 2.6* 0.93
LR+1.43
0.35
LR-0.192
CDT N latex 0.875 0.821-0.930 2.5* 0.66
LR+ 6.93
0.90
LR- 0.369
Asialo+disialo-tf 0.881 0.826-0.936 1.2* 0.78
LR+4.07
0.80
LR-0.268
1.7° 0.66
LR+8.9
0.93
LR-0.360
GGT 0.659 0.580-0.737 85* 0.37
LR+2.14
0.83
LR-0.764
* cut-off point suggested by the manufacturer
° cut-off point suggested by our laboratory
Conclusion: With the cut-off point established by the manufacturer, CDT TIA performed poorly in term of
specificity. N latex CDT and CZE CDT were better, especially if a 1.7 cut-off is used with CZE
can be used in a forensic field to identify potentially dangerous drivers because of their alcohol
habits.
Methods: We studied 280 Swiss drivers after driving while under the alcohol influence. 33 were excluded for
not having CDT N results, 247 were included (218 men (88%) and 29 women (12%). Mean age was
42,4 (SD:12, min: 20 max: 76). The evaluation of the alcohol consumption concerned the month
before the CDT test and was considered as such after the interview: Heavy drinkers (>3 drinks per
day): 60 (32.7%), < 3 drinks per day and moderate: 127 (51.4%) 114 (46.5%), abstinent: 60 (24.3%)
51 (21%). Alcohol intake was monitored by structured interviews, self-reported drinking habits and
the C-Audit questionnaire as well as information provided by their family and general practitioner.
Consumption was quantified in terms of standard drinks, which contain approximately 10 grams of
pure alcohol (Ref. WHO).
Results: comparison between moderate (less or equal to 3 drinks per day) and excessive drinkers (more than
3 drinks)
Marker ROC area 95% CI cut-off sensitivity specificity
CDT TIA 0.852 0.786-0917 2.6* 0.93
LR+1.43
0.35
LR-0.192
CDT N latex 0.875 0.821-0.930 2.5* 0.66
LR+ 6.93
0.90
LR- 0.369
Asialo+disialo-tf 0.881 0.826-0.936 1.2* 0.78
LR+4.07
0.80
LR-0.268
1.7° 0.66
LR+8.9
0.93
LR-0.360
GGT 0.659 0.580-0.737 85* 0.37
LR+2.14
0.83
LR-0.764
* cut-off point suggested by the manufacturer
° cut-off point suggested by our laboratory
Conclusion: With the cut-off point established by the manufacturer, CDT TIA performed poorly in term of
specificity. N latex CDT and CZE CDT were better, especially if a 1.7 cut-off is used with CZE
Create date
24/02/2011 12:18
Last modification date
20/08/2019 14:31
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