◆ Forensic Science

What an evidence technician
really does.

19 tasks, each one witnessed by the sources that watched the job — and behind every one, a prompt you can use tonight.

19evidenced tasks
19,120in the US (2025)
$72,060median pay / year
7systems it runs on
See the 19 tasks ↓Open in the atlasThe full career map →
This is what one task looks like here
Examine and analyze blood stain patterns
Collect and document the blood stain exhibits from Locker 12, photogra…2 sources agree

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The work, task by task

19 tasks
Hands on the work16
Examine and analyze blood stain patterns+
Collect and document the blood stain exhibits from Locker 12, photograph each pattern with scale and ruler, measure stain dimensions and angles, run pattern classification worksheets, then draft a one‑page finding summarizing likely mechanism and preservation needs by end of shift.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Perform tests on weapons or substances+
Receive the submitted handgun and the unknown powder sample, log chain of custody, swab and prepare control and test samples, run presumptive chemical and microscopic examinations, record instrument readings and note any safety or contamination concerns in the test log before 1700.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Operate and maintain laboratory equipment+
Perform the scheduled preventive calibration on the spectrometer and the centrifuge, follow the maintenance checklist, record calibration values and tolerance confirmations, replace worn consumables, and file the completed maintenance record in the equipment folder by close of business.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Testify as expert witnesses in court+
Prepare my expert packet for next Tuesday: compile chain-of-custody, lab reports, calibration certificates, annotated photos, and a concise testimony outline linking methods to conclusions, then circulate the packet to the prosecutor and print three signed copies for court.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Reconstruct crime scenes+
Reconstruct the small-apartment homicide scene at 42 Maple Street: map entry and exit points, place blood spatter and item locations to scale, photograph and annotate each stage, and produce a scene diagram for the detective by 10 a.m.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Wear appropriate protective gear+
Put on nitrile gloves, safety goggles, and an impermeable evidence apron before entering the processing room, check glove integrity and expiry, confirm respirator fit if aerosol work is planned, and record time and serials in the log.
esco
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Calibrate laboratory equipment+
Run the instrument warm-up cycle, load the calibration standard with its lot number, execute the three-point calibration procedure, verify readings within tolerance, print or save the calibration report, and note any deviations in the equipment maintenance log.
esco
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Compare objects and impression marks+
Compare the two shoe impressions and the recovered heel fragment from 34 Elm Street, photograph at scale, document class and individual characteristics, run side-by-side measurements, and write a conclusion on likelihood of source for the detective by Friday.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Work with people1
Grow the practice1
Keep the record1

What the work runs on

named inside the evidenced tasks
10 tasksMicrosoft Wordcreate and maintain detailed test reports and chain-of-custody narrativesOpen its task library → 7 tasksMicrosoft Excelrecord measurements, calculate angles and classify patterns in structured worksheetsOpen its task library →
5 tasksAdobe Photoshopcrop and annotate photos of stains for reports
2 tasksMicrosoft PowerPointcreate simple demonstrative slides to support testimony
2 tasksLinuxuse for logging timestamps and serial numbers into the lab record system or terminal-based inventory
1 taskComputer aided design and drafting CADDcreates scaled scene diagrams and overlays for accurate reconstruction and court exhibits
1 taskMicrosoft Visioproduce accurate sketch-based floorplans and scaled diagrams for court presentation
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The same task, four heights

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ExecuteDo today's task, with fewer mistakesyou are here → ImproveMake it easy for the next person to acceptin the atlas → DecideWork out the right move when it is unclearin the atlas → BecomeLearn the pattern so it stops coming backin the atlas →

Can AI actually do this job?

the honest answer

It can

where it genuinely helps
  • Explain the theory behind the work
  • Draft, tidy and structure your writing
  • Rehearse a hard conversation before you have it
  • Build a study plan that fits your gaps

It cannot

where it stops, completely
  • Be in the room where an evidence technician actually works
  • Carry the responsibility when the call is wrong — that weight stays yours
  • Notice what no one wrote down: the hesitation, the thing left unsaid
  • Live with the outcome

What the work pays

two countries, two different measures

United States

this exact occupation · BLS 2025
  • $72,060 a year — the middle: half earn more, half earn less
  • The lowest tenth earn near $48,250; the top tenth near $117,250
  • 19,120 people employed in this occupation

India

the occupation GROUP, not this job · PLFS via ILOSTAT 2025
  • ₹26,152 a month — the median for Technicians and associate professionals, the group this work sits in
  • India publishes pay by broad occupation group, so this covers many jobs besides this one. It is a shape, not a salary.
read this carefullyThese two numbers are not comparable and must not be converted into each other. One is a yearly figure for this job alone; the other is a monthly figure for a whole family of jobs. What travels between them is the pattern, not the amount: experience lifts pay almost everywhere.

Where the evidence lives

open any of it yourself
O*NETThe US Department of Labor's own record of this job9 of these tasks ESCOThe European skills and occupations register8 of these tasks Job descriptionsReal postings, in the wild10 of these tasks US Bureau of Labor StatisticsPay and employment, by occupation2025 figures UK NOS SFJCN803Undertake technical analyses of forensic samplesnational standard UK NOS SFHHPC5Provide forensic examination and interpretation of injuriesnational standard

Close to this work

12 nearby
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Questions people actually ask

You usually split time between the evidence room, the lab bench, and the office. Mornings often start with logging and photographing new items, using Adobe Photoshop and Microsoft Excel to catalog photos and chain-of-custody entries.

Afternoons can mean preparing samples for testing, running instruments, or helping crime-scene teams reconstruct a scene. You also spend time writing reports in Microsoft Word and sometimes presenting findings in PowerPoint for investigators or court.

Expect to use Microsoft Excel, Word, and PowerPoint every day for logs, reports, and briefings. Adobe Photoshop is common for photo enhancement and redaction; Microsoft Visio or CADD for scene diagrams; Linux can run specialized forensic tools for digital media.

You’ll also operate scientific measuring equipment, lab instruments, and cameras. Training will show you the exact software versions your agency uses and how to export chain-of-custody records.

Yes, AI tools can speed tasks like sorting large amounts of digital media, but you must validate results. Always run AI outputs on a separate sandbox (often on a Linux forensic workstation) and keep originals unchanged.

Record every AI-assisted step in your test sequence and notes in Microsoft Word or your lab system. If AI gives a lead, confirm it with manual review and document how you tested the AI result for court.

According to the U.S. Bureau of Labor Statistics (BLS 2025), 19,120 people were employed as evidence technicians. The median pay was $72,060 per year; the lowest tenth earned $48,250, and the top tenth earned $117,250.

Local pay varies by agency, overtime, and special skills (like firearms or digital forensics) that can push you toward the higher range.

Start with an associate degree in criminal justice, forensic science, or biology, plus hands-on courses: lab techniques, evidence handling, and basic firearms and bloodstain pattern classes. Learn Microsoft Excel, Word, and Photoshop; many community colleges offer relevant classes.

Volunteer or intern at a crime lab, police department, or coroner’s office to practice chain-of-custody, sample prep, and photographing evidence. Certifications (property/evidence management or basic forensics) help your resume.

An evidence technician focuses on collecting, preserving, documenting, and testing items — logging them in Excel, photographing with Photoshop for court, preparing samples, and operating lab tools.

A crime scene investigator (CSI) often works the scene, taking photos and sketches in CADD or Visio; a forensic scientist performs deeper lab analyses and testifies as an expert witness. Roles overlap, but technicians are more about handling evidence end-to-end.

Attention to procedure: you must follow chain-of-custody and recording test sequences exactly, because documentation in Microsoft Word and Excel is what holds up in court. Precision with lab techniques and equipment calibration matters for valid results.

Practical skills: photography and Photoshop for clear evidence images; basic firearms examination if your agency expects it; and the ability to write clear, concise reports and testify about what you did.