[Durgical](https://durgical.com/en/) › [DurgiPedia](https://durgical.com/en/durgipedia/) › [Forensic medicine](https://durgical.com/en/forensic-medicine/) › [Mechanical injuries](https://durgical.com/en/forensic-medicine/areas/injuries/) › Vital reaction: was the wound made in life? # Vital reaction: was the wound made in life? - Method Vital reaction is the set of signs showing an injury happened in life: infiltrated bleeding, retracted edges, inflammation or healing. Updated Nov 5, 2026 ## Key points - Signs of injury in life: blood infiltrating tissues, adherent clots, retracted edges, inflammation, repair. - Postmortem injury: pale, no infiltration, no retraction of edges; parchment-like abrasions. - Injuries close to the time of death may be impossible to classify. - Livor and congestion can mimic bleeding. - Histology and immunohistochemistry help; no marker is enough on its own. ## What it is Whether an injury was made before or after death is a key autopsy question. Injuries in life trigger a response: blood infiltrating the tissues, adherent clots, gaping of the edges from retraction, inflammation and, with time, repair. Injuries after death lack that response. But the boundary is not sharp: around the time of death the response is minimal, and some postmortem changes mimic bleeding. Histology and immunohistochemistry help, but no single marker is decisive. ## Accuracy and limits - Limited accuracy in the interval close to death: the answer may be "undeterminable". - Postmortem injuries in dependent or congested areas can show some blood. - Decomposition makes interpretation harder; some markers survive better than others. - Estimating wound age has wide margins and depends on the method. ## What it is based on - Haemorrhagic infiltration that does not wash away and runs between tissue fibres. - General signs: aspirated blood in the airways, fat or air embolism, swallowed blood. - Inflammation: leucocytes arrive within hours; repair (fibroblasts, new vessels) over days. - Histological and immunohistochemical markers that track the age of the wound. ## How it is applied - Examine the edges and bed of each injury: infiltration, clots, retraction. - Compare with the distribution of livor so as not to mistake hypostatic blood for bleeding. - Look for general signs of life: aspirated blood, embolism, swallowed blood. - Take samples of the injury and of normal control skin for histology. - Integrate the findings with the scene and the history before concluding. ## Next step: what to do and document - At the scene or autopsy, document each injury before moving the body and record its position and livor. - In the report, separate injuries with signs of vital reaction, those without, and those undetermined. - Take histology samples from injuries of interest and a control, with chain of custody. - Record resuscitation, transport and animals at the scene, which cause postmortem injuries. - Do not state an exact time of injury: give ranges and explain the limits. ## Common mistakes - Mistaking livor or a congested area for bleeding from an injury in life. - Attributing resuscitation or transport injuries to assault. - Giving an exact wound age from a single marker. - Not taking a control sample of normal skin for histology. ## Test yourself Think of the answer, then tap the question to see it. ## Which gross sign shows that a wound was made in life? Blood infiltrating the tissues of the edges and bed, which does not wash away, together with adherent clots and retracted edges. ## Why are injuries close to the time of death hard to classify? Because the vital response has barely begun and may be minimal; sometimes the injury must be reported as undetermined. ## Which postmortem change can mimic bleeding? Livor and congestion in dependent areas, which can be mistaken for haemorrhagic infiltration. [Add to my cards (3)](https://durgical.app/estudiar/?add=/en/forensic-medicine/vital-reaction-was-the-wound-made-in-life/) ## Elsewhere in DurgiPedia - [Patterns of acute inflammation: serous, fibrinous, purulent, abscess, ulcer](https://durgical.com/en/general-pathology/patterns-of-acute-inflammation-serous-fibrinous-purulent-abscess-ulcer/) - [Healing of skin wounds: first and second intention](https://durgical.com/en/general-pathology/healing-of-skin-wounds-first-and-second-intention/) ## Connections ## Related 5 - [Postmortem artefacts: what is not an injury](https://durgical.com/en/forensic-medicine/postmortem-artefacts-what-is-not-an-injury/) - [Bruises and haematomas: recognising them, and why colour cannot date them](https://durgical.com/en/forensic-medicine/bruises-and-haematomas-recognising-them-and-why-colour-cannot-date-them/) - [Abrasions](https://durgical.com/en/forensic-medicine/abrasions/) - [The medico-legal autopsy: when it is mandatory in Colombia](https://durgical.com/en/forensic-medicine/the-medico-legal-autopsy-when-it-is-mandatory-in-colombia/) - [Livor mortis (hypostasis)](https://durgical.com/en/forensic-medicine/livor-mortis/) [← All of forensic medicine](https://durgical.com/en/forensic-medicine/) Educational content on forensic and legal medicine; not legal advice and no substitute for the technical guides of Colombia's National Institute of Legal Medicine and Forensic Sciences. Laws change: each page links the official text and says when it was last checked. For a real case, follow the guide in force and ask the competent authority. Sources: [Histological and Immunohistochemical Biomarkers for Wound Age Estimation in Human Skin: A Systematic Review](https://pmc.ncbi.nlm.nih.gov/articles/PMC12861040/) (Cureus (PMC), 2026); [Bloody Evidence: The Validity of Glycophorin A in the Determination of Wound Vitality. A Systematic Review of the Literature](https://pmc.ncbi.nlm.nih.gov/articles/PMC12155515/) (International Journal of Molecular Sciences (PMC), 2025). ## **Spotted a mistake?** We are always improving for the community. Tell us what is wrong and our team will review it. Report a mistake Representative model, for educational purposes only. --- Source: https://durgical.com/en/forensic-medicine/vital-reaction-was-the-wound-made-in-life/ License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite as: DurgiPedia (durgical.com), https://durgical.com/en/forensic-medicine/vital-reaction-was-the-wound-made-in-life/