Our Crime Scene Examination Forms, Evidence Labels, and Evidence Submission Forms can be used to record the systematic examination of crime scenes, the collection of evidence from them, and the submission of evidence to the police store or forensic laboratory. Our Crime Scene Examination Form can be used to record the systematic examination of crime scenes.
Our Evidence Labels (15 x 10 cm) detach easily from their crackback backing sheet, are self adhesive and will permanently attach to most clean, dry surfaces.
Our Continuity Labels (15 x 10 cm) detach easily from their crackback backing sheet, are self adhesive and will permanently attach to most clean, dry surfaces.
Our Evidence Submission Forms are used to convey precise details of both case background and the physical evidence for submission, to the  forensic laboratory which receives them for examination.
Part 7) Packaging and Labelling the Evidence:Once an item of physical evidence has been removed from the location at which it was found, it must be packaged in such a way that it cannot become contaminated or damaged. PackagingEvery item of physical evidence recovered at a scene of crime must be packaged individually in a way that prevents the evidence becoming contaminated or damaged. Table 1 (below) provides a snapshot of the kinds of samples commonly requested when investigating different manners of death, although there may be unique case needs that have to be addressed for some investigations.
Blood, Urine, Liver - Blood is often the specimen of choice for detecting, quantifying and interpreting drugs and other toxicant concentrations.
Urine is the most common sample used for drug testing in the workplace, but it is not always available for post-mortem testing. The liver is a primary solid tissue for use in post-mortem toxicology because it is where the body metabolizes most drugs and toxicants.
Bone and Bone Marrow - Bone, in particular bone marrow, can be used for testing when necessary, but the availability and condition of bones in skeletal remains may limit their usefulness.
Hair and Nails - Hair specimens, usually taken from the back of the head, can be used to test for exposure to heavy metals and drugs over a period of weeks to months. Routine testing, or testing without specific instructions to look for a particular substance, will generally include the drugs shown below in Table 2, but not all drugs. Death by poison can happen in a variety of ways, for example through recreational exposure by inhaling solvents such as butane lighter fluid or fuels, ingesting plant-derived substances like Angel’s Trumpet, accidental exposure to a substance used in the workplace or even accidently produced in the home (like carbon monoxide), or suicidal ingestion of a poison such as strychnine, pesticides, cyanide, etc.

Certification for individuals in the United States and Canada as a forensic toxicology specialist or diplomate is available through the American Board of Forensic Toxicology (ABFT). Forensic toxicologists employ a large number of analytical techniques to determine the drugs or poisons relevant to a case investigation; the capacity of a laboratory to conduct routine toxicological analysis will vary dependent upon equipment, technical capability and analyst experience.
For those samples that give positive screening results, confirmation tests should be performed, preferably using mass spectrometry (MS) detection.
The forms will significantly enhance the experience of students and their trainers in their work.
It is equally important that the item is unable to escape from its packaging for two reasons. Concentrations of drugs and other toxicants in blood may be useful for establishing recent drug ingestion and to determine the effect of a drug on the deceased at the time of death, or at the time the blood was taken. There are no data to suggest that bones from one part of the body are better than others for toxicology tests.
Hair is predominantly used to test for drugs such as amphetamines, cocaine, marijuana (THC) and heroin, and more recently tests have been created to determine if the deceased was drinking heavily in the last few months before death. In the typical autopsy, fluids and tissue samples are collected specifically for toxicology testing.
The most common examples of specific drugs that analysts may be asked to look for are outlined in Table 3, below. These all require specialized tests and the laboratory is alerted to their possible usage or involvement in the death when requests for toxicology testing are submitted.
Certification is based upon the candidate’s personal and professional record of education and training, experience, achievement and a formal examination.
When needed, there are specialty toxicology labs that can test for virtually any potential toxin or metabolite in almost every kind of post-mortem sample. Certification for forensic toxicology laboratories in the United States and Canada is also available through ABFT, and is voluntary and additional to accreditation.
Our evidence labels allow you to record all the important facts regarding items of physical evidence recovered from crime scenes.

These Continuity Labels allow for the sequential recording of the name of every person who takes possession of the item of evidence, and the time and date that possession took place. This can complicate the investigation when someone has been taking prescription medications for some time. Immunoassay screening tests are designed to detect whether a sample is positive or negative for the targeted drug.
For cases involving hospital treatment before death, blood samples taken soon after admission and immediately before death, should also be investigated particularly when poisoning is suspected before admission into hospital. This will ensure that laboratory can reproduce accurate and reliable results for medicolegal investigations. For example, imagine the consequences of a suspected drug in the form of a powder escaping from its package. Like any other evidence, the chain of custody must be preserved at all times, from the mortuary through the laboratory testing, reporting and storage, for court purposes. Hair is subject to external contamination issues that can mitigate its value, so special sample preparations in the lab may be needed for a given case.
For example, using an immunoassay for initial testing and then GC-MS or LC-MS to confirm results would suffice.
This could end up (and no doubt will end up) on the outside of another package so that when this is handled, that drug becomes transfered to the person who opens the package and then on to other items for examination!A knife would be placed into a weapons tube (a hard plastic shell) to prevent the sharp edges from penetrating the tube. If the continuity of evidence is compromised, it can result in the case being dismissed in court.
So, the CSI needs to have a wide range of different types of packaging material and know exactly which is best for the items of evidence being collected. The labels (in the UK) used to record details of the packaged evidence are often called CJA (Criminal Justice Act) labels.

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