◆ Forensic Science

What a forensic biologist
really does.

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

18evidenced tasks
19,120in the US (2025)
$72,060median pay / year
6systems it runs on
See the 18 tasks ↓Open in the atlasThe full career map →
This is what one task looks like here
Reconstruct crime scenes
Reconstruct the kitchen-scene timeline from swabs, footprints and bloo…2 sources agree

The shape of the day

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The work, task by task

18 tasks
Hands on the work15
Reconstruct crime scenes+
Reconstruct the kitchen-scene timeline from swabs, footprints and blood spatter photos, map the entry and exit paths, and produce a step-by-step scene narrative for the lead detective and prosecutor before the evidentiary planning meeting on Tuesday.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Examine and analyze blood stain patterns+
Document and measure each bloodstain at the scene, photograph with scale, map pattern locations, take angle and area measurements, collect substrate samples, record chain-of-custody, then produce a written pattern analysis noting origin, mechanism, and uncertainty by Wednesday.
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+
Isolate and prepare trace and contact samples from the seized weapon or substance, run presumptive and confirmatory assays, log reagent and instrument settings, photograph macroscopic findings, and write a lab report with results and recommended follow-up within 48 hours.
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 preventive maintenance and calibration on the PCR thermocycler and spectrophotometer today, run control samples to verify performance, log serial numbers and calibration data, flag any out-of-spec readings and schedule repairs before next case batch.
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 a courtroom folder: summarize methods and chain-of-custody for the case, assemble annotated photos, control data, and a clear explanation of limitations, rehearse answers to expected cross-examination points, and deliver the binder to the prosecutor two days before the hearing.
jdonet2 agree
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 plaster cast, tire tread cast and questioned shoeprint side-by-side, document distinctive striations and wear patterns with measurement annotations, photograph the key features at scale, and prepare a written comparison stating degrees of association for the case file.
jdonet2 agree
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Examine firearms to determine mechanical condition and legal status, performing restoration work on damaged firearms to obtain information, such as serial numbers.+
Examine the recovered firearm to record mechanical condition, test fire if safe, check for obliterated serial numbers and perform restoration techniques to reveal markings, document tools and chemicals used, and deliver a forensic opinion on operability and legal status to the investigator within seven days.
onet
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
Create photographic and sketch-based documentation+
Create photographic and sketch documentation of the crime scene evidence: capture high-resolution scale photos, produce measured sketches showing evidence locations and orientations, annotate photos with scale and lighting notes, and compile a print-ready evidence packet for court.
jd
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
9 tasksMicrosoft Worddrafts the written pattern analysis and documents chain-of-custodyOpen its task library → 5 tasksMicrosoft Excelrecords assay results, reagent lots, and instrument settings in a structured, auditable tableOpen its task library →
4 tasksMicrosoft Visiolays out movement paths and annotations for investigators and courtroom presentation
4 tasksMicrosoft PowerPointcreates illustrative slides and annotated images to use while testifying
3 tasksLinuxstores and runs instrument validation scripts and logs for calibration and performance verification
1 taskComputer aided design and drafting CADDcreates scaled scene diagrams and path reconstructions from measured evidence
Browse every evidenced software task →

The same task, four heights

this page is height one
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 a forensic biologist 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 register7 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’ll split time between the lab and the field. Mornings often mean preparing samples, running tests, calibrating instruments, and recording test sequences in logbooks or Microsoft Word/Excel.

Afternoons can include photographing evidence, creating sketches or CADD diagrams, analyzing blood stain patterns, and sometimes visiting a scene to collect samples or reconstruct the scene. Court testimony or report review happens when cases reach prosecution.

Expect Microsoft Word for reports, Excel for tracking samples and chain-of-custody spreadsheets, and PowerPoint for presentations or courtroom visuals. Linux systems run some lab instruments and digital analysis tools.

You may use CADD or Microsoft Visio to sketch scenes, and standard lab equipment like centrifuges, spectrometers, microscopes, and measurement tools that require routine calibration and maintenance.

According to the U.S. Bureau of Labor Statistics (BLS) 2025 data, about 19,120 people are employed as forensic biologists. The median pay is $72,060 per year, the lowest tenth earn about $48,250, and the top tenth earn about $117,250.

Local pay varies by city, employer (police lab vs. private lab), and experience. Use BLS for national numbers and check state or city government job listings for local ranges.

A bachelor’s in biology, forensic science, or a related life science is common. Take courses in molecular biology, serology (blood analysis), and laboratory techniques like PCR and microscopy. Learn to prepare samples, wear protective gear, and record test sequences carefully.

Get hands-on experience via internships or volunteer work in a crime lab or university lab. Practice using Excel, Word, and basic CAD/Visio for scene sketches and chain-of-custody tracking.

A forensic biologist focuses on biological evidence: blood, DNA, tissue, and bodily fluids, plus lab tests and report writing. CSIs usually collect evidence at scenes and create photographic/sketch documentation, though roles overlap.

A forensic technician often handles routine lab tasks and equipment maintenance. Biologists analyze samples, interpret DNA results, compare patterns like bloodstain analysis, and may testify as expert witnesses.

You can use digital analysis tools and some AI for pattern recognition or data management, but treat AI outputs as aids, not final answers. Always verify AI results with lab tests and human review, and document the verification steps.

Maintain chain-of-custody, record test sequences, calibrate equipment, and keep software logs. Courts expect transparent methods; write reports in Word and keep raw data in Excel or secure Linux systems.

Attention to chain-of-custody and precise recordkeeping is critical: record test sequences, sample prep steps, and instrument calibration in Word or Excel. Mistakes here can invalidate evidence.

Technically, strong laboratory technique—accurate pipetting, contamination control, and proper PPE use—matters immediately. Those skills let you prepare samples, run tests, and produce defensible results in court.