What Does a Forensic Scientist Do?

Forensic science is a fascinating field that plays a crucial role in criminal justice. Forensic scientists are highly skilled professionals who apply scientific knowledge and techniques to analyse evidence and help solve crimes. Their work often involves collecting, examining, and interpreting physical and biological evidence at crime scenes. In this article, we will explore the role of a forensic scientist, their main duties and responsibilities, and the key skills required for this profession.

What is a Forensic Scientist?

A forensic scientist is a trained expert who applies scientific principles and techniques to investigate and analyse evidence related to criminal cases. They work closely with law enforcement agencies and examine various types of evidence to help determine the truth behind a crime. Forensic scientists can specialise in different areas, such as DNA analysis, firearms and ballistics, toxicology, or forensic anthropology.

Forensic scientists are responsible for collecting and preserving evidence to ensure its integrity and admissibility in court. They examine evidence and conclude using various scientific methods and technologies, including microscopy, spectroscopy, chromatography, and DNA profiling. Their findings are often presented as expert testimony in court, where they can provide critical insights that help judges and juries reach informed decisions.

What Does a Forensic Scientist Do?

The work of a forensic scientist varies depending on their area of specialisation and the nature of the crime being investigated. However, most forensic scientists undertake several common tasks and responsibilities.

One of the primary duties of a forensic scientist is to visit crime scenes to collect and document evidence. They carefully photograph and sketch the scene, ensuring no detail is overlooked. They collect physical evidence like fingerprints, blood samples, hair, fibres, and other trace materials that could provide valuable clues in solving the crime.

In the laboratory, forensic scientists analyse the collected evidence using various scientific techniques. For example, a DNA analyst may extract DNA from a bloodstain and compare it to a suspect’s DNA profile. A firearm and ballistics expert may examine bullets and spent cartridge cases to determine the type of weapon used in a shooting. Toxicologists analyse body fluids and tissues for the presence of drugs or poisons. The results of these analyses are meticulously documented and can serve as crucial evidence in court.

Main Duties and Responsibilities of a Forensic Scientist

The responsibilities of a forensic scientist are diverse and require a high level of expertise in scientific analysis. Some of the key responsibilities include:

  • Analyse and interpret evidence from crime scenes.
  • Perform scientific tests on physical evidence.
  • Prepare reports detailing findings and conclusions.
  • Present evidence in court as an expert witness.
  • Collaborate with legal professionals and also on law enforcement agencies.
  • Stay updated with advancements in forensic science.
  • Maintain integrity and accuracy in all analyses.
  • Follow proper protocols for evidence collection and handling.
  • Assist in identifying victims and suspects.
  • Provide expert opinions and recommendations to aid investigations.

Key Skills for a Forensic Scientist

Being a forensic scientist requires a unique set of skills and attributes. Here are some of the key skills that are essential for success in this profession:

  1. Attention to Detail: Forensic scientists must possess exceptional attention to detail to ensure accurate analysis and interpretation of evidence.
  2. Critical Thinking: Analytical and logical thinking skills are vital for forensic scientists when evaluating evidence and drawing conclusions.
  3. Scientific Knowledge: A strong foundation in scientific principles, particularly chemistry, biology, and physics, is crucial for understanding and applying forensic techniques.
  4. Communication Skills: Forensic scientists need to communicate their findings effectively in written reports and as expert witnesses in court.
  5. Problem-Solving Abilities: Forensic scientists often encounter complex cases that require innovative problem-solving skills to uncover the truth.


Forensic scientists play a crucial role in investigating and resolving criminal cases. Their expertise in scientific analysis and evidence interpretation provides valuable insights that assist law enforcement agencies in identifying and apprehending criminals. 

From evidence collection and analysis to report writing and courtroom testimony, forensic scientists contribute their skills and knowledge to ensure justice is served. If you have a passion for science, meticulous attention to detail, and a desire to make a difference in the criminal justice field, a forensic scientist career may be the perfect fit for you.