OPT Medical Laboratory Scientist Jobs

Medical Laboratory Scientist jobs are available to F-1 OPT students with a degree in clinical laboratory science, medical technology, or a related biomedical field. Most positions qualify as STEM OPT, giving you up to 36 months of work authorization. Hospitals, reference labs, and public health agencies regularly hire MLS graduates on OPT.

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Overview

Open Jobs1,073+
Top Visa TypeF-1 OPT
Work Type98% On-site
Median Salary$46K
Top LocationBoston, MA
Most JobsQuest Diagnostics

Showing 5 of 1,073+ Medical Laboratory Scientist jobs

Quest Diagnostics
Medical Laboratory Scientist II
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Quest Diagnostics
New 20h ago
Medical Laboratory Scientist II
Quest Diagnostics
Warner Robins, Georgia
Allied Health
Healthcare Administration
Clinical Support
Laboratory Science
Medical Assistant
$26.97/hr
On-Site
1+ yr exp.
Associate's
10,000+

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MaineHealth
Medical Laboratory Scientist / Medical Lab Technician
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MaineHealth
New 20h ago
Medical Laboratory Scientist / Medical Lab Technician
MaineHealth
Sanford, Maine
Allied Health
Clinical Support
Healthcare Administration
Laboratory Science
Medical Assistant
On-Site
Associate's
10,000+

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ARUP Laboratories
Medical Laboratory Scientist I/Technologist I
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ARUP Laboratories
Added 1d ago
Medical Laboratory Scientist I/Technologist I
ARUP Laboratories
Salt Lake City, Utah
Allied Health
Healthcare Administration
Laboratory Science
On-Site
Bachelor's
1,001-5,000

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Geisinger
Medical Laboratory Scientist Expert
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Geisinger
Added 1d ago
Medical Laboratory Scientist Expert
Geisinger
Coal Township, Pennsylvania
Allied Health
Healthcare Administration
Laboratory Science
On-Site
4+ yrs exp.
Bachelor's
10,000+

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University of Texas Medical Branch
Medical Laboratory Scientist
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University of Texas Medical Branch
Added 1d ago
Medical Laboratory Scientist
University of Texas Medical Branch
Galveston, Texas
Allied Health
Healthcare Administration
Laboratory Science
On-Site
Bachelor's
5,001-10,000

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Tips for Finding OPT Sponsorship as a Medical Laboratory Scientist

Target STEM OPT-eligible employers first

Hospitals, hospital networks, and large reference laboratories like Quest and LabCorp are enrolled E-Verify employers. Confirm E-Verify enrollment before applying so your 24-month STEM OPT extension is actually usable from day one.

Lead with your ASCP certification status

MLS(ASCP) certification signals clinical competency to hiring managers and satisfies many state licensure requirements. If you're board-eligible but not yet certified, say so explicitly. Employers know new graduates often sit for boards after starting.

Clarify your OPT timeline upfront

Lab hiring cycles can run 6 to 10 weeks. Tell recruiters your OPT start date and remaining authorized period early. This prevents late-stage rejections from employers who misunderstand how post-completion OPT timelines work.

Apply to teaching hospitals and academic medical centers

Academic medical centers affiliated with universities often have established international hiring pipelines and HR teams familiar with OPT and H-1B visa sponsorship. They are more likely to retain high-performing OPT employees after authorization expires.

Highlight specialty rotations that match the job posting

Microbiology, hematology, and molecular diagnostics are high-demand specialties. Match your clinical rotation experience directly to the department listed in the posting. Specificity outperforms a generic list of laboratory competencies in competitive applicant pools.

Ask about H-1B sponsorship before accepting an offer

Raise H-1B sponsorship during the offer stage, not after you start. Ask whether the employer has sponsored MLS roles before. A yes with prior experience is a stronger signal than a general willingness to consider it in the future.

Medical Laboratory Scientist OPT: Frequently Asked Questions

Does a Medical Laboratory Scientist role qualify for STEM OPT extension?

Yes. Medical Laboratory Scientist positions typically fall under CIP codes in clinical laboratory science, which is a STEM-designated field. That means you're eligible for the 24-month STEM OPT extension beyond your initial 12 months, giving you up to 36 months of total OPT work authorization. Confirm your degree's CIP code with your DSO before filing the extension.

Do I need a state license to work as an MLS on OPT?

It depends on the state. About half of U.S. states require a clinical laboratory scientist license to work independently, including California, Florida, and New York. Licensing requirements are separate from OPT authorization. You can often start working while your license application is pending, but verify this with your employer and state licensing board before your start date.

How can I find Medical Laboratory Scientist jobs that sponsor OPT students?

Migrate Mate is built specifically for F-1 OPT students and filters jobs by sponsorship willingness, so you're not wasting applications on employers who won't work with OPT. Search for Medical Laboratory Scientist roles directly on Migrate Mate to find positions at hospitals, reference labs, and public health organizations that are open to OPT candidates.

Will employers sponsor me for an H-1B after my OPT ends?

Many hospital systems and large reference laboratories have sponsored MLS professionals for H-1B visas, particularly in high-demand specialties like microbiology and molecular diagnostics. Sponsorship is not guaranteed and depends on the employer's size, HR infrastructure, and your performance. The best time to confirm a potential employer's H-1B track record is during the offer negotiation stage, not after you start.

Can I work in multiple laboratory departments on OPT, or am I restricted to one specialty?

OPT authorizes you to work in your field of study broadly, not in a single department or specialty. A Medical Laboratory Scientist on OPT can rotate through chemistry, hematology, microbiology, and other sections without violating work authorization, as long as the role aligns with your degree. However, your EAD must be valid and you must be employed in a role that directly relates to your program of study.