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BY  Ashraf Mahmoud Emara Professor of Clinical Toxicology Forensic Medicine and Clinical Toxicology Department Faculty of medicine Tanta university
[object Object],[object Object],[object Object],[object Object],[object Object]
What is meant by chain of custody? It is the ability to trace and safe guard the sample through all steps from collection, analysis, to final report of the result .
How to apply the chain of custody? 1- Sample(s) collection. 2- Personnel and security . 3- Storage and use of sample.
Collection of sample ,[object Object],[object Object],[object Object],[object Object]
1- Sample(s) collection. Chain of custody sheet or form: Each time possession of samples is transferred, both the person delivering the sample and the person receiving the sample sign the form and record the date and time on the COC.
1- Sample(s) collection. ,[object Object],[object Object],[object Object],[object Object],[object Object],An accompanied analytical toxicology request
 
 
 
 
 
 
 
 
 
 
 
 
No Test ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]
 
In clinical cases:  the presence of drug at the time of original collection is usually desired, hence any later collection is worthless. 1- Sample(s) collection: In forensic cases :  the specimens collection is very important since there is rarely an opportunity to recollect specimens. Bodies have usually sent out of mortuary.
Choice of specimens ,[object Object],[object Object],[object Object]
Choice of specimens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Specimens 1- Blood 2- Urine 3- Gastric 4- Liver and other tissues specimens 5- Bile 6- Vitreous humor 7- Hair 8- Sweat 9- Saliva
[object Object],[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],Blood CHAIN OF CUSTODY
[object Object],[object Object],Urine CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Urine CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],Urine CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Gastric contents CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Liver and other tissues specimens CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Bile CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],Hair CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],Hair CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Hair CHAIN OF CUSTODY
[object Object],[object Object],Sweat CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],Saliva CHAIN OF CUSTODY
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Saliva CHAIN OF CUSTODY
[object Object],[object Object],[object Object],Vitreous Humour CHAIN OF CUSTODY
[object Object],Personnel and security . ,[object Object],[object Object]
[object Object],[object Object],[object Object]
 

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Chain of custody

  • 1. BY Ashraf Mahmoud Emara Professor of Clinical Toxicology Forensic Medicine and Clinical Toxicology Department Faculty of medicine Tanta university
  • 2.
  • 3. What is meant by chain of custody? It is the ability to trace and safe guard the sample through all steps from collection, analysis, to final report of the result .
  • 4. How to apply the chain of custody? 1- Sample(s) collection. 2- Personnel and security . 3- Storage and use of sample.
  • 5.
  • 6. 1- Sample(s) collection. Chain of custody sheet or form: Each time possession of samples is transferred, both the person delivering the sample and the person receiving the sample sign the form and record the date and time on the COC.
  • 7.
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  • 23. In clinical cases: the presence of drug at the time of original collection is usually desired, hence any later collection is worthless. 1- Sample(s) collection: In forensic cases : the specimens collection is very important since there is rarely an opportunity to recollect specimens. Bodies have usually sent out of mortuary.
  • 24.
  • 25.
  • 26. Specimens 1- Blood 2- Urine 3- Gastric 4- Liver and other tissues specimens 5- Bile 6- Vitreous humor 7- Hair 8- Sweat 9- Saliva
  • 27.
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