When discussing sexual and gender-based violence, attention focuses—rightly—on the victim. Less often is there reflection on what happens immediately afterwards, regarding the technical and operational steps that can decisively influence the outcome of a proceeding.
One of these steps concerns the handling of biological samples.
Anyone working in healthcare, forensics, or the laboratory knows it well: simply collecting a sample is not enough. What matters is how it is collected, where it is stored, who handles it, and how it is tracked over time. This is where the chain of custody comes into play.
In cases of sexual and gender-based violence, any weak link in this chain risks becoming a serious problem—not only in terms of evidence but also on a human level.
The problem is not the analysis, but everything that comes before it.
People often tend to think that the critical phase is the laboratory analysis itself. In reality, however, critical issues usually arise earlier—during sample collection, identification, or transfer from one setting to another.
An unsuitable container, a closure that cannot be verified, incomplete traceability. Seemingly minor details. Yet enough to raise doubts or objections, or—in the worst-case scenario—render a piece of evidence unusable.
That is why anti-tampering kits cannot be considered an accessory. They are, to all intents and purposes, a guarantee tool.
What truly makes a kit “reliable”
A properly designed kit must meet very specific requirements. It must prevent unauthorized opening, make any tampering attempt visible, reduce the risk of contamination, and allow for clear and consistent sample identification.
But there is a less obvious—and perhaps even more important—aspect: simplifying the work of those who use it. In contexts that are already complex and sensitive, the standardization of procedures reduces human error and strengthens the continuity of the chain of custody.
It is not a matter of bureaucracy. It is a matter of reliability.
Chain of custody: a shared responsibility
The chain of custody does not belong to a single actor. It involves healthcare personnel, laboratories, law enforcement, and judicial authorities. The tamper-evident kit is one of the few elements that spans all these stages.
If poorly designed, the chain weakens.
If well designed, it becomes a point of continuity.
And it is precisely this continuity that makes it possible to uphold a piece of evidence over time, avoiding challenges that have nothing to do with the merits of the facts.
This, too, constitutes protection for the injured party.
Talking about kits and procedures might seem far removed from the human dimension of violence. In reality, it is exactly the opposite.
Any invalidated piece of evidence or procedural error can result in renewed exposure for someone who has already suffered violence. Ensuring adequate tools means reducing the risk of having to repeat the process, of uncertainty, and of judicial proceedings being cut short for avoidable reasons.
Experience and design count.
Designing tamper-evident kits requires knowledge of application contexts, regulations, and real-world challenges. It is not a task that can be improvised.
For over thirty years, P.P. & C. has been producing tamper-evident kits for biological samples intended for laboratory analysis, maintaining a constant focus on safety, traceability, and process reliability.
In a context where every step can make the difference, the quality of the tool is not a mere technical detail; it is an integral part of the protection system.