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Medical Laboratory Scientist, Part-Time - Weekender

Mercyhealth · Janesville, WI · $35.85–$53.77 an hour · Part time

Posted Sep 16, 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

This is a weekender role covering hematology, chemistry, urinalysis and blood bank or micro. Which areas are you strongest in, and where would you need more training?

What they are checking: Whether they can honestly assess their skills across lab benches, since weekend staff often cover alone.

Tell me about a time you trained or mentored someone in the lab.

What they are checking: Whether they can teach others, since the posting mentions training and competency assessment.

Tell me about a time you caught an error before a result was released.

What they are checking: Whether they review results critically before release, which protects patients from wrong answers.

What would you do

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, document specimen quality and ask for a recollection.

A nurse calls upset that a stat result is taking too long. How do you handle it?

What they are checking: Whether they stay calm, explain the delay and prioritize correctly without cutting corners.

About the work

How do you confirm a specimen is correctly identified before running it?

What they are checking: Whether they follow strict two-identifier rules and reject specimens that don't match.

Your quality control on the chemistry analyzer is out of range on a busy Saturday. Walk me through your next steps.

What they are checking: Whether they know not to report patient results until QC is fixed and can troubleshoot methodically.

Walk me through how you'd do a crossmatch and what would stop you from releasing blood.

What they are checking: Whether they understand blood bank steps and when an antibody or mismatch means they must hold the unit.

How do you call a critical value to a nurse or physician, and what do you document?

What they are checking: Whether they follow critical value policy, including read-back and recording who took the call.

What does CLIA mean for how you perform and document moderate and high complexity testing?

What they are checking: Whether they understand the regulations behind competency, QC and documentation in the lab.

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The full job description

As published by Mercyhealth.

OVERVIEW This position performs a variety of moderate- and high-complexity laboratory testing, including specimen collection, analysis, quality control, troubleshooting , and result reporting across multiple lab specialties. The role also supports laboratory operations through instrument maintenance, training and mentoring , competency assessment, and participation in process and procedure improvements. Schedule: Weekender Shift: Variable, as needed ESSENTIAL DUTIES AND RESPONSIBILITIES • Collects patient specimens as needed. • 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. • Confirms accuracy of patient sample identification prior to performing analyses; evaluates specimen quality and identifies when unacceptable. Documents information concerning quality of specimen, impact of sub-optimal specimens on test values. Initiates recollection procedure as indicated. • Perform waived, moderate and high complexity lab tests as defined by CLIA 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. Recognizes subtle yet significant problems which occur with testing methodologies. Troubleshoots suspect test results using technical knowledge and experience. Implements corrective action when inaccurate, inappropriate findings/results/reports are identified. • Performs high complexity tests such as bone marrow, sperm morphology, etc. • 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, advanced troubleshooting and calibration of laboratory instrumentation. • Participate in method and instrument evaluation and implementation • Investigates/resolves technical issues. • Participates on interdepartmental committees or teams. • Participates in teaching students and training new partners. • Completes and signs off on competency checklists for techs. • Develops updates and procedures as requested. • Serves as a resource to inexperienced partners. • Performs additional tasks such as scheduling, antibiograms, etc. • Maintain competency in current procedures and gain competency for new methods implemented EDUCATION AND/OR EXPERIENCE 1.Bachelor of Science degree in Medical Technology Must be qualified to perform high complexity testing according to CLIA 493.1489 Standard; Testing personnel qualifications. 2.Associates degree in Medical Technology AND Must be qualified to perform high complexity testing according to CLIA 493.1489 Standard; Testing personnel qualifications. a)MLT certification and 15 years clinical experience OR b)MLT certification and minimum 10 years experience or 5 years MHS experience in core clinical lab plus at least one specialty lab OR c)MLT certification, minimum 10 years experience or 5 years MHS experience in core clinical lab and additional responsibilities in scheduling or competency testing of other partners CERTIFICATION/LICENSURE MT/MLS Generalist Certification or Specialty Certification in Blood Bank, Chemistry, Hematology or Microbiology required within 12 months of hire. OR MLT Certification and 5 years of experience. OTHER SKILLS AND ABILITIES N/A LEVEL OF SUPERVISION Some independent judgment is required, but alternatives are limited by standard practices or procedures. SUPERVISES This job has no supervisory responsibilities. PAY RANGE: $35.85 - $53.77 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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