Jobs › Mercyhealth

Medical Laboratory Technician - Nights

Mercyhealth · Lake Geneva, WI · $24.60–$36.91 an hour · Full time

Posted Aug 14, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

You work seven nights on and seven off, often as the only tech. How do you handle being alone in the lab?

What they are checking: Whether they can make sound decisions independently and know when to call for help.

Tell me about a time you troubleshot an instrument problem.

What they are checking: Whether they can work through equipment problems logically and keep tests moving.

Tell me about a time you helped train a student or new coworker.

What they are checking: Whether they can teach well, since the posting mentions training staff and students.

What would you do

The ER is calling because results are taking too long. How do you handle it?

What they are checking: Whether they prioritize stat work and communicate turnaround times clearly.

About the work

Your quality control fails on the chemistry analyzer at 2 a.m. What do you do?

What they are checking: Whether they hold patient results and troubleshoot instead of releasing results that may be wrong.

A potassium comes back critically high, but the sample looks hemolyzed. What do you do?

What they are checking: Whether they recognize a likely false result and request a redraw instead of reporting it as critical.

Walk me through how you report a critical result to a nurse.

What they are checking: Whether they follow read-back and documentation rules so the result is acted on.

How do you crossmatch blood for a transfusion, and what would make you stop?

What they are checking: Whether they are careful in blood bank, where an error can kill a patient.

How do you review a CBC result before releasing it?

What they are checking: Whether they check flags, delta checks and smears instead of auto-releasing everything.

Which areas of the lab are you strongest in, and which do you need more practice with?

What they are checking: Whether they are honest about their skills across hematology, chemistry, blood bank and micro.

Practice this interview out loud.

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The full job description

As published by Mercyhealth.

OVERVIEW The job involves collecting patient samples and performing laboratory tests in areas such as blood, urine, chemistry, microbiology, and blood banking. The employee must make sure test results are accurate, complete quality checks, maintain lab equipment, and report critical results on time. The role also includes using lab computer systems, troubleshooting problems, and helping train new staff and students. SCHEDULE: 7 nights on, 7 nights off rotation SHIFT: Nights ESSENTIAL DUTIES AND RESPONSIBILITIES • Utilize the Information System to receive patients, order and collect samples, result tests, answer questions from nurses and physicians, document quality control activities and produce reports required to perform job tasks. • Perform lab tests in the lab specialties of hematology, urinalysis, chemistry and blood bank or microbiology by automated and manual methods according to defined policies and procedures. • Analyze test results prior to release of information to chart for validity and accuracy. • Assure that designated turnaround times for results are met and that critical results are appropriately reported and documented. • Perform quality control and proficiency testing procedures as defined by policy • Interpret and troubleshoot quality control results to ensure accurate and precise test results. • Perform preventative maintenance, minor troubleshooting and calibration of laboratory instrumentation. • Participates in method and instrument evaluation and implementation. • Participates in teaching and training of new partners and students. • Maintain competency in current procedures and gain competency for new methods implemented. • Collect patient specimens. EDUCATION AND EXPERIENCE Associate degree in medical laboratory science or military equivalent or must be qualified to perform high complexity testing according to CLIA 493.1489 Standard: Testing personnel qualifications. CERTIFICATION AND LICENSURE MLT certification within one year of hire or meets CLIA 493.1489 Standard: Testing personnel qualifications on or before April 24, 1995 SPECIAL PHYSICAL DEMANDS The Special Physical Demands are considered Essential Job Functions of the position with or without reasonable accommodations. While performing the duties of this Job, the employee is frequently required to stand; use hands to finger, handle, or feel. The employee is required to talk, hear and smell. The employee is occasionally required to walk; sit and reach with hands and arms. The employee may have occasion to reach overhead to pick up objects or to adjust items. The employee may have occasion to bend under or crawl under bench to move or obtain objects. The employee must occasionally lift and/or move up to 50 pounds. Specific vision abilities required by this job include close vision, distance vision, peripheral vision, color vision, depth perception and ability to adjust focus. LEVEL OF SUPERVISION Some independent judgment is required, but alternatives are limited by standard practices or procedures. PAY RANGE: $24.60 - $36.91 Mercyhealth is an Equal Opportunity Employer . All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identify, national origin, disability, or protected veteran status. Mercyhealth offers competitive pay and a comprehensive benefits package including: • Medical, Dental, Vision • Life & Disability Insurance • FSA/HSA Options • Generous, accruing paid time off • Paid Parental and caregiver leave • Career advancement and educational opportunities • Tuition and certification reimbursement • Certification Reimbursement • Well-being Programs • Employee Discounts • On-Demand Pay • Financial Education • Annual recognition/awards events • Partner appreciation days • Family entertainment/attractions discount • Community service/improvement opportunities Click here for more details regarding Mercyhealth Careers Benefit Information. At Mercyhealth, we don’t simply hire people, we empower employee-partners who are passionate about making lives better. As an integrated health system, we deliver exceptional, coordinated across seven hospitals, 85 primary and specialty clinics, and a team of over 7,500 professionals serving northern Illinois and southern Wisconsin. Mercyhealth has been nationally recognized for our commitment to our people and culture, including: • #1 in the nation on AARP's Best Employers for Workers Over 50 • One of Working Mother magazine's 100 Best Companies for Working Mothers • A Top 50 Company and Top 10 Nonprofit for Executive Women

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