Updated
PERM occupation, SOC 19-4021.00, #369 of 1,410 by filings
Biological Technicians
- Biggest sponsor
- Fred Hutchinson Cancer Center · 8% of its filings
- Busiest state
- CA · 28% of its filings
- Major group
- Life, physical and social science · SOC 19
Weighing an offer for this job?
Where it falls among certified offers, and the four wage levels DOL sets for it by area.
This rate is level with the field
Over 67 decided filings, this rate can't be told apart from the field in either direction.
Why
The 95% interval runs up to a 10.2% denial rate, which still covers the 3.20% the field as a whole records.
Median wage
$51,958
all PERM $103,272
Filings
74
#369 of 1,410
Approval
97.0%
field 96.8%
Median days
486
9 slower than the field
What it pays
Where its median offer sits among every occupation, then the whole ladder of certified offers by year and by state.
Median offered wage
$51,958above 35%
Approval rate
97.0%ahead of 54%
Median days to decision
486 daysahead of 16%
Each bar counts occupations at that value. More
Who files it
The sponsors and firms with the most PERM filings under this code, the places the work sits, and who the workers were.
Sponsors filing it
- Fred Hutchinson Cancer Center 6 filings
- Institute for Environmental Health, Inc. 5 filings
- BioMarin Pharmaceutical Inc. 3 filings
- California Medical Research Associates, Inc. 3 filings
- Natera, Inc. 3 filings
- Eurofins Xenco LLC 2 filings
How this is counted
The employers with the most applications under this code. 22 of 74 filings, 30% of the total.
Firms filing it
- Cowan Miller & Lederman 7 filings
- Karam Law 7 filings
- Fragomen, Del Rey, Bernsen & Loewy LLP 5 filings
- Boundless Immigration Inc. 3 filings
- Harms Immigration Law 3 filings
- Kao Immigration Law Office PC 2 filings
How this is counted
The law firms named on the most applications under this code. 27 of 74 filings, 36% of the total.
Where the jobs are
- California 21
- Washington 11
- Massachusetts 6
- Maryland 6
- Texas 5
- New York 4
How this is counted
The worksite state on the application, which is where the job is and not where the company is headquartered. Volume by state across everyone is on the state map. These 6 states cover 53 of 74 filings.
Where the work is
- Seattle, WA 9
- Northridge, CA 3
- Novato, CA 3
- Rockville, MD 3
- San Carlos, CA 3
- Boston, MA 2
How this is counted
The worksite city on the application, which is where the job is. These 6 cities cover 23 of 74 filings.
- Every sponsor that files it, by state, approval rate, offered wage and time to a decision
- Every filing for it, PERM, wage requests and H-1B, case by case
Newspapers it advertised in
- 9 cases
San Francisco Chronicle
- 9 cases
The Seattle Times
- 5 cases
The Washington Post
- 4 cases
The Boston Globe
- 4 cases
Houston Chronicle
- 4 cases
Los Angeles Times
How this is counted
The newspaper or professional journal named for each case's two print ads, one count per paper per case, however the filer spelled it.
Additional steps it used
- 68 cases
Job search websites
- 52 cases
Local or ethnic newspapers
- 25 cases
Campus placement offices
- 23 cases
Radio or TV ads
- 19 cases
The employer's website
- 11 cases
Employee referral programs
How this is counted
The steps a professional job needs beyond the job order and the ads, by the number of cases that name each.
How long before filing it began
- 0.0%
Under 30 days
- 0.0%
30 to 59 days
- 23%
60 to 89 days
- 33%
90 to 119 days
- 20%
120 to 149 days
- 20%
150 to 180 days
- 2.9%
Over 180 days
How this is counted
Days from the first recruitment step to the filing. 20 C.F.R. § 656.17(e) puts the job order and ads 30 to 180 days before filing.
The job itself
What O*NET says the work is, what the market pays it by BLS's survey, its outlook, and DOL's wage levels year by year.
- United States69,620 jobs
- Seattle-Tacoma-Bellevue, WASeattle
- San Francisco-Oakland-Fremont, CANovato, San Carlos
- Washington-Arlington-Alexandria, DC-VA-MD-WVRockville
- Boston-Cambridge-Newton, MA-NHBoston
- middle half of pay (BLS)
- median
- 10th to 90th percentile
- DOL's Levels I to IV, left to right
- median PERM offer
| Area | BLS median | Level I | Level II | Level III | Level IV |
|---|---|---|---|---|---|
| United States | $57,510 | ||||
| Seattle-Tacoma-Bellevue, WA | $63,770 | $49,837 | $56,784 | $63,752 | $70,699 |
| San Francisco-Oakland-Fremont, CA | $95,220 | $60,653 | $79,997 | $99,341 | $118,685 |
| Washington-Arlington-Alexandria, DC-VA-MD-WV | $63,510 | $46,738 | $56,077 | $65,416 | $74,755 |
| Boston-Cambridge-Newton, MA-NH | $61,610 | $49,962 | $58,739 | $67,496 | $76,274 |
How these figures fit together
BLS surveys employers on what they pay everyone in a job; DOL builds its four levels from the same survey a year later (the July 2026 wage year uses BLS's May 2025 estimates). DOL publishes levels by area, not nationally, so the United States line has none. Levels are hourly in DOL's tables; here they're shown a year at 2,080 hours, as DOL computes them. The metros are the ones holding the most of this job's PERM filings, placed by Census's county files.
The block is the middle half of what employers report paying everyone in this job, citizen or not; the ticks under it are DOL's four prevailing wage levels for that metro, the floors a PERM or H-1B offer is held to. More
DOL's levels for this job in Seattle-Tacoma-Bellevue, WA, year by year
Each July DOL resets the four levels from BLS's newest survey. A determination keeps the figures of the year it was issued in.
| Wage year | Level I | Level II | Level III | Level IV |
|---|---|---|---|---|
| 2026-27 | $49,837 | $56,784 | $63,752 | $70,699 |
| 2025-26 | $46,051 | $52,374 | $58,718 | $65,042 |
| 2024-25 | $44,845 | $51,584 | $58,344 | $65,083 |
| 2023-24 | $42,661 | $48,922 | $55,162 | $61,422 |
| 2022-23 | $44,075 | $50,939 | $57,803 | $64,667 |
| 2021-22 | $38,771 | $45,032 | $51,272 | $57,533 |
What the job is
Assist biological and medical scientists. Set up, operate, and maintain laboratory instruments and equipment, monitor experiments, collect data and samples, make observations, and calculate and record results. May analyze organic substances, such as blood, food, and drugs.
- Preparation
- Considerable Preparation Needed
- O*NET Job Zone 4
- DOL's education basis
- Bachelor's degree
- Wage year 2026-27, on DOL's Appendix A list
- Jobs, 2025 to 2035
- +7.4%
- About 9,400 openings a year (BLS)
- Typical entry
- Bachelor's degree
- BLS
Bright Outlook O*NET OnLine lists this job for rapid growth.
The work, most important first
- Conduct research, or assist in the conduct of research, including the collection of information and samples, such as blood, water, soil, plants and animals.
- Monitor and observe experiments, recording production and test data for evaluation by research personnel.
- Examine animals and specimens to detect the presence of disease or other problems.
- Input data into databases.
- Isolate, identify and prepare specimens for examination.
- Monitor laboratory work to ensure compliance with set standards.
The education workers in it report
- 14%
High School Diploma or the equivalent (such as a GED)
- 14%
Some College Courses
- 6%
Post-Doctoral Training
Titles people use for it
Biological Science Lab Tech (Biological Science Laboratory Technician), Biological Science Technician (Biological Science Tech), Research Assistant, Research Associate, Biologist Aide, Biologist Technician (Biologist Tech), Environmental Technician (Environmental Tech), Fisheries Biological Technician (Fisheries Biological Tech).
Related jobs: Medical and Clinical Laboratory Technicians, Medical and Clinical Laboratory Technologists, Chemical Technicians, Cytogenetic Technologists, Histotechnologists, Agricultural Technicians.
This section includes information from the O*NET 31.0 Database and O*NET OnLine by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. O*NET® is a trademark of USDOL/ETA. PERM Tracker has modified some of this information (the shares are rounded and only the top tasks are shown); what changed. USDOL/ETA has not approved, endorsed, or tested these modifications.
Against other jobs
Where this sits in the ranking
Ranked 369 of 1,410 by volume: 368 filed at least as many filings, and 1,041 filed no more.
- Just above
- Cooks, Private Household 74 filings
- Just below
- Cooks, Short Order 74 filings
Other life, physical and social science roles
Occupations sharing this one's SOC major group, which is carried in the first two digits of the code. More
Occupations sharing this one's SOC major group, which is carried in the first two digits of the code. Wages inside a group still swing hard, because the group holds every seniority level and every metro.
- #388 Urban and Regional Planners 69 filings · 4 denied
- #407 Materials Scientists 63 filings · 2 denied
- #414 Transportation Planners 62 filings · 3 denied
- #419 Biochemists and Biophysicists 61 filings · 1 denied
- #317 Quality Control Analysts 95 filings · 3 denied
- #422 Clinical and Counseling Psychologists 60 filings · 2 denied
The same job on H-1B
4,937 certified H-1B labor condition applications for this occupation since FY2020, offering a median of $54,080 a year; the middle half ran $45,823 to $65,000. By state and year in the salary explorer.
Notes on these numbers
Reading the wage
A floor, not a salary survey: every level and metro mixed. DOL's four wage levels for this job, by area.
What the median is
The median wage employers committed to in federal filings for this occupation. It mixes every experience level and every metro, and it's a floor: the employer must offer at least the prevailing wage DOL determines for the occupation, level and county. Across all PERM filings the middle half of offered wages runs $45,178 to $141,357, so a figure inside that band is unremarkable whichever occupation it belongs to. The levels page reads DOL's OFLC wage search live.
What these numbers don't say
4 notes
- The code is the identity
- This one is SOC 19-4021.00. Two SOC codes can carry the same job title, so a title that looks duplicated on the ranking is two different occupations. Match on the code when you're checking a specific filing.
- A median isn’t an offer
- It's the middle of all 74 wages committed to for this occupation across the country, entry level and principal alike. The same role's medians swing hard by worksite, which the state map shows directly.
- Approval isn’t about the occupation
- The denial rate moves with what happened in the filing rather than with the job title, so nothing here is a property of Biological Technicians. The measured factors are on the denial risk page, published as separate rates.
- Nothing here is pending
- All 74 counted here carry a decision date, because every case in DOL's disclosure files does, so a case still waiting is in none of them. The largest filer of this occupation is Fred Hutchinson Cancer Center. Where the queue stands today is on the processing times page.
The window these figures cover: DOL's PERM disclosure files for fiscal years 2024 to 2026, through the third quarter of 2026, 373,939 decided cases. Nothing pending is counted here. How each figure is built
Weighing an offer?
Compare it against this median, then check the state map, where the same occupation's medians swing hard by worksite.
Setting one?
All 1,410 occupations sort together on the wages page, and denial rates show how outcome moves with the offered wage.
Filings newer than DOL's last published file can't be attributed to this occupation until DOL publishes them. The live list on the case search page carries them by employer.
Case data: DOL quarterly disclosure files (flag.dol.gov) · data through Jun 30, 2026 · quarterly
Employers and firms: Derived from DOL's disclosure files · data through Jun 30, 2026 · rebuilt with each quarterly load
O*NET occupation data: O*NET Database, USDOL/ETA (onetcenter.org) · data through Aug 16, 2026 · twice a year
BLS market pay: BLS Occupational Employment and Wage Statistics (bls.gov) · data through May 31, 2025 · yearly, each spring
BLS employment projections: BLS Employment Projections (bls.gov) · data through Dec 31, 2025 · yearly, each autumn
DOL wage tables: DOL OFLC wage data downloads (flag.dol.gov) · data through Jul 1, 2026 · yearly, each july
What each source includes
Case data: Decided PERM cases only. A case still waiting isn't in here, so counts and durations describe finished cases.
Employers and firms: Employers, law firms and occupations ranked from decided cases only.
O*NET occupation data: What O*NET says each occupation is and takes: its description, tasks, Job Zone and the education workers report. A description of the job everywhere, not of any one employer's opening.
BLS market pay: What employers report paying everyone in each job, nationally, by state and by metro, from BLS's yearly survey (May of the year named). Citizens and immigrants alike; not PERM offers.
BLS employment projections: BLS's ten-year projection of each job's employment and yearly openings, and the entry education it calls typical. A projection, not a count.
DOL wage tables: The four prevailing wage levels DOL publishes for every job in every area, each wage year from 2021-22, as DOL's own tables print them. The floors an offer is held to, not what anyone was paid.
Cite this page
Waiting on a PERM case?
- When it'll likely be decided
- An email when DOL moves it