Deniz Yalcin Lead Laboratory Assistant, MLA (ASCP), PBT (ASCP) Columbus, 43214, United States [email protected] · (614) 555-1462
16 September 2026
Ms. Marika Steenkamp Laboratory Operations Sharon Woods Regional Laboratory Columbus, United States
Application for Laboratory Assistant II, Sharon Woods Regional Laboratory
Dear Ms. Steenkamp,
I am applying for the Laboratory Assistant II post on the second shift receiving rota at Sharon Woods Regional Laboratory. I am MLA (ASCP) and PBT (ASCP) certified, I have led second shift receiving at a reference laboratory for three years at roughly 4,200 specimens a night, and I can take the weekend rotation from the start.
The result I would most want to bring is on specimen rejection. When I took the shift, the department was rejecting 1.9 percent of specimens, and most of it happened in one place: outreach courier deliveries arriving unlabeled or mislabeled, sorted into the same queue as everything else. I resequenced the sort to separate stat from routine at the window, added a two-person label verification on courier deliveries only, and rewrote the recollection request so the client callback happened the same evening. Over four quarters the rejection rate came down to 0.7 percent, and median accession-to-centrifuge time went from 34 minutes to 19.
I noticed your posting mentions moving outreach accessioning onto Epic Beaker. I have worked in both Sunquest and Beaker, and I trained nine of the eleven assistants on my current shift through a four-week competency sign-off, so I would want to be useful during that changeover. I would also keep the weekly courier temperature audit.
My certification numbers are MLA-3308174 and PBT-3341902, both current, and I am 44 credit hours into an associate degree in medical laboratory technology, with the MLT examination planned for 2027. I can start on two weeks' notice. Thank you for your time.
Sincerely, Deniz Yalcin, MLA (ASCP), PBT (ASCP)
Summary
A lab assistant cover letter tells a laboratory supervisor which shift you can cover, how many specimens you move through it, and one quality number you changed while you were there. This guide gives you a full adaptable letter, the evidence to use when your laboratory has never handed you a number, what changes between a physician office and a reference laboratory, and the openings that get a strong file called first.
Lab Assistant cover letter examples by experience level
A lab assistant cover letter is a one-page letter that tells a laboratory supervisor which shift you can cover, how many specimens you move through it, and one quality number you changed while you were there.
Laboratory hiring runs on coverage. In practice, a receiving department builds its staffing in blocks, and the short block is usually second shift, third shift or the weekend. As a result, a letter that answers that in its first two sentences is unusual enough that readers finish it.
Guide to a lab assistant cover letter
In short, this guide and the corresponding lab assistant cover letter example will cover:
- First, how to structure the letter, paragraph by paragraph
- Then, why your shift and your throughput belong in the first paragraph
- What a quality number looks like when your system barely reports one
- Also, how the letter changes between a physician office and a reference laboratory
How to write a lab assistant cover letter
| Paragraph | Its job | Length |
|---|---|---|
| Opening | The post, your credential, your shift, your throughput | 2 to 3 sentences |
| Evidence | One process, one number, a before and an after, a period | 4 to 5 sentences |
| Fit | Something specific about their laboratory, and what you would take on | 3 to 4 sentences |
| Close | Certification numbers, availability, thank you | 2 sentences |
Put the shift in the first two sentences
A supervisor reading applications is holding a schedule with holes in it, not weighing your enthusiasm against the next candidate's.
So write the sentence that answers them: "I am MLA (ASCP) certified, I have run second shift in a reference laboratory receiving department for three years at roughly 4,200 specimens a night, and I am available for the weekend rotation your posting lists."
Then, if true, add the line that turns one hire into two: "I also hold PBT (ASCP) and draw 38 to 46 patients a day, so I can cover the patient service center."
A lab assistant cover letter example you can adapt
Dear Ms. Steenkamp,
I am applying for the Laboratory Assistant II post on the second shift receiving rota at Sharon Woods Regional Laboratory. I am MLA (ASCP) and PBT (ASCP) certified, I have led second shift receiving at a reference laboratory for three years at roughly 4,200 specimens a night, and I can take the weekend rotation from the start.
The result I would most want to bring is on specimen rejection. When I took the shift, the department was rejecting 1.9 percent of specimens, and most of it happened in one place: outreach courier deliveries arriving unlabeled or mislabeled, sorted into the same queue as everything else. I resequenced the sort to separate stat from routine at the window, added a two-person label verification on courier deliveries only, and rewrote the recollection request so the client callback happened the same evening. Over four quarters the rejection rate came down to 0.7 percent, and median accession-to-centrifuge time went from 34 minutes to 19.
I noticed your posting mentions moving outreach accessioning onto Epic Beaker. I have worked in both Sunquest and Beaker, and I trained nine of the eleven assistants on my current shift through a four-week competency sign-off, so I would want to be useful during that changeover. I would also keep the weekly courier temperature audit.
My certification numbers are MLA-3308174 and PBT-3341902, both current, and I am 44 credit hours into an associate degree in medical laboratory technology, with the MLT examination planned for 2027. I can start on two weeks' notice. Thank you for your time.
Sincerely, Deniz Yalcin, MLA (ASCP), PBT (ASCP)
Openings that work
| Instead of | Use |
|---|---|
| I have always been fascinated by laboratory science | I am MLA (ASCP) certified and have run second shift receiving at roughly 4,200 specimens a night |
| I am writing to express my interest in your laboratory assistant position | I am applying for the Laboratory Assistant II post on the second shift receiving rota, and I can take the weekend rotation |
| I am a hardworking team player with attention to detail | Specimen rejection on my shift came down from 1.9 percent to 0.7 percent |
What counts as evidence when your laboratory barely measures you
Labs measure pre-analytic work less than testing, and nobody has ever handed most assistants a number. Instead, build one from what the system produces.
| Kind of evidence | What it looks like in a sentence |
|---|---|
| Throughput | Accession 420 to 520 specimens a shift and process 600 to 750 tubes through centrifugation and aliquoting |
| Rejection | Department rejection rate came down from 1.9 percent to 0.7 percent over four quarters |
| Labeling | Mislabeled specimens fell from 1.4 per thousand to 0.3 after a two-person courier verification |
| Collection | 38 to 46 draws a day with a 0.6 percent redraw rate across roughly 9,400 draws |
In fact, none of those needs a quality department. Rejection counts, mislabels and receipt timestamps are already in the laboratory information system, because 42 CFR 493.1242(b) requires a laboratory to document the date and time it receives each specimen (eCFR, current as of 14 September 2026).
Physician office laboratory or reference laboratory
However, the two ends of this job want opposite letters, and sending the wrong one is the most common avoidable mistake here.
For a physician office laboratory, clinic or pharmacy, lead with collection and the waived test menu, because you will be both the person in front of the patient and the person running the bench. Name the tests and say they sit under the site's Certificate of Waiver, with daily quality control logged. For a hospital core or reference laboratory, lead with shift, throughput and rejection criteria.
Do not open with why you love science. Do not claim nonwaived testing without a route under 42 CFR 493; the supervisor reading you has to survive an inspection. Do not describe result interpretation or quality control acceptance as your decision. Do not put a patient name in a letter, or send one with no laboratory name in it.
Most certified laboratories in the country run only waived tests
The Centers for Medicare and Medicaid Services counts 300,720 laboratories registered under CLIA as of August 2026, of which 232,736 hold a Certificate of Waiver, against 15,292 with a Certificate of Compliance and 15,541 with a Certificate of Accreditation (CMS, Division of Clinical Laboratory Improvement and Quality, CLIA enrollment, August 2026).
That is the practical reason to write two versions of this letter. Most employers are small waived sites, where the reader cares about collection, the test menu and whether a patient will be comfortable with you. The roughly 31,000 compliance and accreditation sites are the hospital and reference laboratories, where the reader cares about throughput, shift and what you reject at the window. Clinical laboratory technologists and technicians, the occupation above yours, had a median annual wage of $62,930 as of May 2025 (BLS Occupational Outlook Handbook, May 2025), which is why the letter should name the certification step you are on.
Length, format and sending it
One page, four paragraphs, 250 to 400 words. PDF unless the portal says otherwise, named for yourself and the post: deniz-yalcin-lab-assistant-cover-letter.pdf
Address a person. Also, the department page of a hospital or reference laboratory site usually names laboratory managers, and "Dear Hiring Manager" on an otherwise specific letter looks like one sent to twelve labs.
Keep every figure identical to your resume; the interview will compare them. Our lab assistant resume example uses the numbers written here, and the free ATS checker will tell you whether the certificate strings survive the parser.
Key takeaways
- First, name the shift you can cover in the first two sentences.
- Then give the credential parenthetical exactly as the certifying body writes it.
- In addition, state the throughput: specimens accessioned, tubes processed, draws a day.
- Pick one quality number with a before, an after and a period.
- Say which certificate type your waived testing sits under, then stop.
- Also, name one real thing about their laboratory, from their own pages.
- Finally, address a named person and keep it to a page.
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Lab assistant cover letter questions, answered
How long should a lab assistant cover letter be?
One page, four paragraphs, 250 to 400 words. Supervisors read these between shifts, and length does not read as effort. If your scope is long, compress it into one labeled sentence.
Do I need a cover letter if the hospital application is a portal?
Attach one wherever there is a field for it. The portal collects the same structured record from everyone. The letter is the only place you can say which shift you will take and what you fixed at the receiving window.
What do I write with no laboratory experience yet?
Write your practicum as a job. Accredited programs include supervised clinical hours, so give the laboratory, the setting, the hours, the specimen volume and the steps you were signed off on. Then your certification or examination date and your shift availability. Coverage is a real offer, and a new assistant who will take third shift is useful.
Should I mention the tests I run?
Yes, by name, with the certificate they sit under. If your site holds a Certificate of Waiver, list the waived tests and say you follow manufacturer instructions and log daily quality control, which is what CDC asks: waived tests "must be performed correctly by trained personnel in environments adhering to good laboratory practices" (CDC, Waived Tests, last reviewed 2 April 2026). Do not claim nonwaived testing unless you meet a route under 42 CFR 493.1423.
How do I write to a laboratory I know nothing about?
Spend ten minutes on their site first: the department page, the test catalog, the client services page, and any posted accreditation. One accurate sentence about their actual work, such as a system changeover, is worth more than a paragraph of admiration, and it is the part nobody can copy into the next letter.