Hospital medical laboratory technician job description
A hospital medical laboratory technician runs the blood, urine and blood bank tests that doctors use to find and treat illness. In a small lab like this, the MLT is often the only tech at night. They handle ER stat work, quality control, critical value calls and blood draws on their own.
By the HireBus team · Updated · Pay data: BLS, May 2025
Annual pay: 10th percentile $40,720, middle half $51,090 to $84,450, 90th percentile $102,070. Source: BLS Occupational Employment and Wage Statistics, May 2025.
Reports to
Laboratory Manager
Department
Laboratory
Schedule
Days, evenings or nights, plus call · Shifts of eight or twelve hours, weekends and holidays in turn, and call from home on nights without a tech in house
We're hiring a medical laboratory technician to run tests in our hospital lab: chemistry, hematology, coagulation, urinalysis and blood bank. In a small lab, you're a generalist and often the only tech on evenings or nights, so you'll handle stat ED work, quality control, critical value calls and blood draws.
2. Essential Duties and Responsibilities
Perform and verify chemistry, hematology, coagulation, urinalysis and [blood bank and microbiology] tests following lab procedures.
Run and document quality control, calibration and maintenance, and hold patient results when QC fails.
Call critical values to the nurse or provider, get a read-back, and document who received them.
Collect blood from ED, inpatient and outpatient patients, labeling at the bedside with two identifiers.
Follow chain of custody for legal blood alcohol and drug screen specimens from collection to release.
Process, package and ship send-out tests to the reference lab, and track results back to the chart.
Complete proficiency testing and competency records required under CLIA and [your accrediting body, such as CAP or COLA].
3. Key Tasks / Daily Activities
Run start-of-shift QC and maintenance on analyzers.
Put stat ED and code tests ahead of routine work.
Type, screen and crossmatch blood and issue products following blood bank procedures, where your lab offers them.
Review point-of-care testing QC logs from the units and follow up on gaps.
Hand off pending tests and instrument problems to the next shift.
4. Key Performance Indicators (KPIs)
Stat ED turnaround time: [your target].
Critical values called within policy time: [your target].
Associate degree in medical laboratory technology or a lab science that meets CLIA testing personnel rules.
MLT (ASCP) certification or equivalent, per your lab's CLIA requirements.
State clinical laboratory license where your state requires.
Phlebotomy skills, or the ability to learn them in training.
[1+] years of hospital lab experience, or a completed clinical rotation.
6. Preferred Experience
Generalist experience across chemistry, hematology, coagulation, urinalysis and blood bank.
Experience working alone on evening or night shifts.
Experience with [your analyzers and lab information system].
MLS (ASCP) certification or progress toward it.
7. Physical Requirements
Sit and stand at the bench for long periods, with steady, fine hand work.
Walk to patient rooms and the ED to draw blood.
With or without reasonable accommodation.
8. Work Environment and Schedule
[8 or 12]-hour shifts with evenings, nights, weekends and call coverage: [schedule].
Exposure to blood, body fluids, chemicals and infectious agents, with PPE and safety training.
Lab setting with running instruments, alarms and frequent phone calls.
9. Compensation and Benefits
Pay: [range and hourly or salary basis].
Additional pay: [overtime, bonus or incentive terms, or none].
Benefits: [health, dental, vision, retirement, paid time off, and when they start].
10. Company Culture and Overview
[Two or three sentences on what your company does, the area you serve, and the support a new medical laboratory technician gets in the first 90 days.]
11. How to Apply
[Apply link or email]. Our process: [phone interview, in-person interview, and next steps]. Contact [hiring contact] if you need an accommodation during the application process.
Need help filling this role? HireBus posts the ad, Iris interviews every applicant by phone before you do, and you decide who to hire. Start hiring now
What's different about MLT work in a small rural hospital
MLTs everywhere run tests and quality control. Here, one tech may cover every section of the lab on a shift, and the patient waiting on the result is usually in the ER.
Alone on the shift, with a supervisor by phone
CLIA lets a tech with an accredited associate degree in a lab science or medical laboratory technology run high complexity tests. For that work, a general supervisor must be reachable whenever testing happens, on site or by phone or computer, to help solve technical problems. On nights here, that is often the manager or a lead at home. Ask candidates when they would call, and what they would hold until morning. Source: eCFR: 42 CFR Part 493 Subpart M, personnel for nonwaived testing.
Blood has to be ready at any hour
A critical access hospital must have blood ready for emergencies at any hour, on its own or through an agreement. Blood storage has to meet CLIA's rules, under the control of a pathologist or another qualified doctor. When a bleeding patient comes in at night, the MLT on duty may be the one who tests and issues the blood, where your state and your blood bank procedures allow it. Source: 42 CFR 485.618: emergency services in critical access hospitals.
Critical values go out right away
CLIA requires the lab to alert the person who ordered a test right away when a result points to a life-threatening condition. If results will run late, the lab decides whether to warn someone, based on how urgent the test is. When a reported result turns out wrong, the lab must tell the ordering provider and send a corrected report. At night, the call may go to an ER nurse or a provider on call at home. Source: 42 CFR 493.1291: test reports.
A state license can be narrower than CLIA
Some states license lab staff, and the license can limit what an MLT may do. California's MLT license, for one, covers waived and moderate complexity tests only. It leaves out crossmatching, antibody identification, manual differentials and every high complexity test. If your state licenses lab staff, check what an MLT may do alone before you build a night schedule around one. Source: California Department of Public Health: MLT license.
Send-outs ship under federal packing rules
Tests the lab doesn't run go to a reference lab by courier or carrier. Specimens shipped as Category B infectious substances need three layers of packing, with a rigid outer box marked Biological substances, Category B. Federal rules say anyone who packs or ships them must know those rules. The MLT often packs the evening courier run and tracks each result back to the chart. Source: 49 CFR 173.199: Category B infectious substances.
How much hospital medical laboratory technicians make
The closest BLS group for hospital medical laboratory technicians is clinical laboratory technologists and technicians. Clinical laboratory technologists and technicians who work for general medical and surgical hospitals earned a median of $32.90 an hour ($68,440 a year) in May 2025, according to the Bureau of Labor Statistics. That’s above the $62,930 median for clinical laboratory technologists and technicians in all industries. About 146,970 of the 332,940 clinical laboratory technologists and technicians in that survey work for general hospitals.
An hourly rate, with shift differentials for evening, night and weekend work and standby pay for call. MLS certification or blood bank experience may bring a higher rate at some hospitals.
General hospitals
$68,440$68,440 median Middle half $51,090–$84,450 10th–90th $40,720–$102,070
All industries
$62,930$62,930 median Middle half $47,650–$81,450 10th–90th $38,910–$100,990
$25k$50k$75k$100k$125k
10th–90th percentileMiddle halfMedianAnnual pay, May 2025. Source: BLS Occupational Employment and Wage Statistics.
Annual pay by percentile
Group
10th
25th
Median
75th
90th
General hospitals
$40,720
$51,090
$68,440
$84,450
$102,070
All industries
$38,910
$47,650
$62,930
$81,450
$100,990
These figures cover general medical and surgical hospitals of every size. Rural hospitals often pay less than city hospitals. Post a real range for your market in the ad.
Skills to hire for, and what you can teach
Hire for these
Hands-on skill in chemistry, hematology, coagulation and urinalysis
Holds patient results when QC fails, even with the ER calling for them
Works a full shift alone and knows when to call for help
Steady venipuncture on hard sticks in the ER and on the unit
Clear phone reports, with a read-back on every critical value
Moves stat and code work ahead of routine tests without losing track of either
Teach these on the job
Your analyzers, maintenance schedule and downtime steps
Your blood bank procedures, from type and screen to issuing products
Chain of custody forms for legal blood alcohol and drug specimens
Your LIS, test codes and send-out manual
Reviewing point-of-care QC logs from the units
Expect a chemistry analyzer, a hematology counter, a coagulation analyzer, a urine analyzer, blood bank tube or gel testing and a blood bank refrigerator, all feeding the lab information system. A tech who has already run your analyzer brands needs less training, so ask about them in the interview.
Hospital medical laboratory technician interview questions
They have their own page: 6 questions that test this job, what strong and weak answers sound like, and a work exercise to run with your finalists.
Fit each target to your own test volume and staffing. With one tech on nights, compare shifts and techs over months, not single days.
Stat ED turnaround time
Time from specimen receipt to verified result for stat ER orders, from LIS time stamps. Break it out by shift so a slow night isn't hidden inside the daytime average.
Critical values called within policy time
Share of critical results with a logged call, a read-back and the name of the person told, inside your policy window. Audit a sample from every shift each month.
Specimen rejection rate
Rejected specimens divided by specimens received, with each rejection coded by reason, such as hemolysis, clots, short draws or label problems. Send the reasons back to the units that collected them.
Acceptable proficiency testing results
Graded results the program marked acceptable, for the samples this tech ran. Review any miss with the manager and file the corrective action with the report.
QC documentation complete
Analyzer runs with QC recorded, reviewed and acted on before patient results went out. Spot-check logs and maintenance records each week, including the night shift's.
Career path
Lab assistant or phlebotomistDraws blood and processes specimens while finishing an MLT program.
Medical Laboratory TechnicianRuns tests across every section, often alone on nights.
Medical laboratory scientistFinishes a bachelor's degree and earns MLS certification.
Lead tech or general supervisorLeads a shift or a section and signs off on other techs' work.
An MLT usually has an associate degree. A medical laboratory scientist, or MLS, usually has a bachelor's. BLS says technologists do more complex tests, and technicians often work under a technologist or lab manager. Still, CLIA lets an MLT with an associate degree in a lab science run high complexity tests, so in a small lab both may work the same bench. The gap shows up in supervisor roles and in some state licenses.
How much does a hospital medical laboratory technician make?
Clinical laboratory technologists and technicians who work for general medical and surgical hospitals earned a median of $32.90 an hour ($68,440 a year) in May 2025, according to the Bureau of Labor Statistics. The middle half earned between $51,090 and $84,450 a year. Pay also depends on your local market, experience and overtime.
Which certification should a hospital MLT hold?
Ask for MLT certification from the ASCP Board of Certification or from American Medical Technologists (AMT). AMT's routes include an associate degree from an accredited MLT program, a military lab course of at least 50 weeks, or an associate degree or 60 college credits with set lab and science courses, plus six months of lab work. Graduates of more than five years ago also need recent lab work. In a state that licenses lab staff, check which exams it accepts.
How do we bring a travel MLT up to speed?
Before any tech reports patient results, CLIA requires the right education, training on your test systems, and proof they can run them reliably. Schedule a travel tech's first shifts on days, beside a staff tech. Check them off on each analyzer, the blood bank and your downtime steps before they work a night alone. Confirm any state lab license before they start.
Does a hospital MLT draw blood?
Usually, yes. A small hospital may have no phlebotomist on evenings or nights, so the MLT draws ER and inpatient patients and then runs the tests. The template asks for phlebotomy skill or the willingness to learn it. Train new techs on hard sticks, children, and a failed draw during a code.
