This hire guide was edited by the ZipRecruiter editorial team and created in part with the OpenAI API.
How to hire Clinical Laboratory Scientist
Hiring the right Clinical Laboratory Scientist (CLS) is a critical decision for any healthcare organization, diagnostic laboratory, or research facility. These professionals are the backbone of laboratory operations, ensuring the accuracy and reliability of test results that inform patient diagnoses, treatment plans, and public health decisions. In medium to large businesses, the impact of a skilled CLS extends beyond the laboratory bench; their expertise directly influences operational efficiency, regulatory compliance, and the overall reputation of the organization. A single error in laboratory testing can have far-reaching consequences, from misdiagnosed patients to costly legal challenges and damaged trust with stakeholders.
As the demand for high-quality laboratory services grows, especially in the wake of global health challenges and technological advancements, the competition for top CLS talent has intensified. Employers must not only identify candidates with the right technical skills but also those who demonstrate integrity, adaptability, and a commitment to continuous learning. The right hire can streamline laboratory workflows, introduce innovative testing methodologies, and mentor junior staff, all while upholding the highest standards of safety and accuracy. Conversely, a poor hiring decision can result in workflow bottlenecks, increased error rates, and regulatory violations.
This guide provides a comprehensive roadmap for business owners and HR professionals seeking to hire Clinical Laboratory Scientists efficiently and effectively. From defining the role and required certifications to sourcing candidates, assessing both technical and soft skills, and ensuring a smooth onboarding process, each step is crucial to building a resilient and high-performing laboratory team. By following these best practices, organizations can secure the talent necessary to drive business success, maintain compliance, and deliver outstanding patient care.
Clearly Define the Role and Responsibilities
- Key Responsibilities: Clinical Laboratory Scientists are responsible for performing complex chemical, biological, hematological, immunologic, microscopic, and bacteriological tests. In medium to large businesses, they analyze specimens, interpret results, calibrate and maintain laboratory equipment, and ensure compliance with quality control protocols. They may also participate in developing new testing procedures, training junior staff, and maintaining accurate records for regulatory audits. Their work is essential for diagnosing diseases, monitoring patient health, and supporting research initiatives.
- Experience Levels: Junior Clinical Laboratory Scientists typically have 0-2 years of experience and may focus on routine testing under supervision. Mid-level professionals, with 2-5 years of experience, handle more complex analyses, troubleshoot equipment issues, and may oversee specific laboratory sections. Senior CLS professionals, with 5+ years of experience, often lead teams, manage quality assurance programs, and contribute to laboratory management and policy development. Each level requires progressively deeper technical expertise and leadership abilities.
- Company Fit: In medium-sized companies (50-500 employees), Clinical Laboratory Scientists may wear multiple hats, requiring versatility and cross-functional collaboration. They may be involved in both bench work and administrative duties. In large organizations (500+ employees), roles tend to be more specialized, with clear delineation between technical, supervisory, and research responsibilities. Larger companies may also require experience with advanced automation systems and compliance with multiple regulatory bodies.
Certifications
Certifications are a cornerstone of the Clinical Laboratory Scientist profession, providing assurance of a candidate's technical competence and commitment to industry standards. The most widely recognized certification in the United States is the Medical Laboratory Scientist (MLS) credential, issued by the American Society for Clinical Pathology (ASCP). To obtain the MLS(ASCP) certification, candidates must possess a bachelor's degree in medical laboratory science or a related field, complete an accredited clinical laboratory program, and pass a rigorous national examination. This certification is often a minimum requirement for employment in hospitals, reference laboratories, and research institutions.
Another prominent certification is the Clinical Laboratory Scientist license issued by individual state agencies, such as the California Department of Public Health (CDPH). State licensure requirements vary but typically include completion of an accredited educational program, documented clinical experience, and successful completion of a state-specific exam. Some states require ongoing continuing education to maintain licensure, ensuring that professionals remain current with evolving laboratory practices and technologies.
Specialty certifications are also available for Clinical Laboratory Scientists seeking to demonstrate expertise in specific areas, such as microbiology, hematology, molecular biology, or cytogenetics. The ASCP offers Specialist certifications (e.g., SM(ASCP) for microbiology, SH(ASCP) for hematology) that validate advanced knowledge and skills. These credentials are particularly valuable for roles in specialized laboratories, research settings, or leadership positions.
Employers benefit from hiring certified Clinical Laboratory Scientists by reducing training time, ensuring regulatory compliance, and enhancing the credibility of laboratory operations. Certifications signal a candidate's dedication to professional development and adherence to best practices, which is critical in an industry where accuracy and reliability are paramount. When evaluating candidates, HR professionals should verify the authenticity of certifications through the issuing organization's online verification tools and prioritize those with up-to-date credentials and a record of continuing education.
Leverage Multiple Recruitment Channels
- ZipRecruiter: ZipRecruiter is a leading platform for sourcing qualified Clinical Laboratory Scientists, offering a range of features tailored to healthcare recruitment. Its intelligent matching technology distributes job postings across hundreds of job boards, maximizing visibility among active and passive candidates. Employers benefit from ZipRecruiter's robust filtering tools, which allow for precise targeting based on certifications, experience, and location. The platform's user-friendly interface streamlines the application review process, while automated alerts notify recruiters of promising applicants in real time. ZipRecruiter also provides detailed analytics on job posting performance, enabling continuous optimization of recruitment strategies. Many healthcare organizations report high success rates and faster time-to-hire when leveraging ZipRecruiter's expansive network and advanced search capabilities.
- Other Sources: In addition to online job boards, internal referrals remain a valuable channel for identifying reliable Clinical Laboratory Scientist candidates. Employees often recommend colleagues with proven track records, reducing the risk of poor hires. Professional networks, such as alumni associations and laboratory science forums, facilitate connections with experienced professionals seeking new opportunities. Industry associations, including the American Society for Clinical Laboratory Science (ASCLS), host career fairs, webinars, and job boards dedicated to laboratory professionals. General job boards and university career centers can also yield qualified entry-level candidates. By diversifying recruitment channels, employers increase their chances of attracting a broad and talented applicant pool, ensuring the best fit for their organizational needs.
Assess Technical Skills
- Tools and Software: Clinical Laboratory Scientists must be proficient with a range of laboratory instruments and software platforms. Commonly used tools include automated analyzers for chemistry, hematology, and immunology testing, as well as microscopes, centrifuges, and spectrophotometers. Familiarity with Laboratory Information Systems (LIS) such as Epic Beaker, Cerner Millennium, or Sunquest is essential for managing test orders, tracking specimens, and reporting results. Knowledge of quality control software and data analysis tools, such as Microsoft Excel or specialized statistical packages, is increasingly important for monitoring laboratory performance and ensuring compliance with regulatory standards.
- Assessments: Evaluating technical proficiency requires a combination of written tests, practical demonstrations, and scenario-based interviews. Written assessments may cover laboratory safety protocols, troubleshooting procedures, and interpretation of test results. Practical evaluations can include hands-on demonstrations of specimen processing, equipment calibration, and quality control checks. Some organizations use simulation software or case studies to assess a candidate's ability to handle complex or unexpected situations. Reference checks with previous supervisors can provide additional insight into a candidate's technical competence and reliability under pressure.
Evaluate Soft Skills and Cultural Fit
- Communication: Effective communication is vital for Clinical Laboratory Scientists, who must collaborate with physicians, nurses, laboratory technicians, and administrative staff. They are responsible for conveying complex test results clearly and accurately, often under tight deadlines. Strong interpersonal skills enable them to train new team members, participate in interdisciplinary meetings, and resolve conflicts constructively. During interviews, look for candidates who can articulate technical concepts to non-specialists and demonstrate active listening skills.
- Problem-Solving: The ability to troubleshoot equipment malfunctions, identify sources of testing errors, and adapt to rapidly changing priorities is essential for success in the laboratory environment. Top candidates exhibit analytical thinking, resourcefulness, and a calm demeanor under pressure. Behavioral interview questions, such as describing a time they resolved a critical testing issue, can reveal a candidate's approach to problem-solving and resilience in challenging situations.
- Attention to Detail: Precision is non-negotiable in laboratory science, where even minor errors can compromise patient safety and regulatory compliance. Assess attention to detail by asking candidates to describe their process for verifying specimen identification, documenting results, and adhering to quality control protocols. Practical exercises, such as reviewing mock laboratory reports for errors, can further demonstrate a candidate's meticulousness and commitment to accuracy.
Conduct Thorough Background and Reference Checks
Conducting thorough background checks is a critical step in the hiring process for Clinical Laboratory Scientists, given the sensitive nature of their work and the regulatory requirements governing laboratory operations. Begin by verifying the candidate's educational credentials, ensuring that degrees and transcripts are from accredited institutions. Confirm the authenticity of professional certifications and state licenses through the issuing organizations' online verification portals. This step is essential for compliance with federal and state regulations, as well as for maintaining the integrity of laboratory operations.
Reference checks provide valuable insight into a candidate's work ethic, technical competence, and interpersonal skills. Speak with former supervisors and colleagues to assess the candidate's reliability, ability to work in a team, and adherence to safety protocols. Ask specific questions about the candidate's role in quality assurance, incident reporting, and response to high-pressure situations. These conversations can uncover red flags that may not be evident from resumes or interviews alone.
Additional due diligence may include criminal background checks, particularly for roles involving access to controlled substances or sensitive patient data. Some organizations also require pre-employment drug screening and verification of immunization status, in line with occupational health standards. By conducting comprehensive background checks, employers protect their organizations from potential legal liabilities, safeguard patient safety, and ensure that new hires meet the highest standards of professionalism and integrity.
Offer Competitive Compensation and Benefits
- Market Rates: Compensation for Clinical Laboratory Scientists varies based on experience, geographic location, and organizational size. As of 2024, entry-level CLS professionals typically earn between $55,000 and $70,000 annually. Mid-level scientists with 2-5 years of experience command salaries ranging from $70,000 to $85,000, while senior-level professionals and supervisors can earn $85,000 to $110,000 or more, especially in high-cost metropolitan areas. Specialized roles or those requiring advanced certifications may offer premium pay. Employers should regularly benchmark salaries against industry standards to remain competitive and attract top talent.
- Benefits: A comprehensive benefits package is a key differentiator in recruiting and retaining Clinical Laboratory Scientists. Standard offerings include health, dental, and vision insurance, retirement plans with employer matching, paid time off, and continuing education allowances. Many organizations provide tuition reimbursement for advanced degrees or certification renewal, supporting ongoing professional development. Additional perks such as flexible scheduling, remote work options for administrative tasks, wellness programs, and childcare assistance can further enhance job satisfaction. In highly competitive markets, sign-on bonuses, relocation assistance, and performance-based incentives are effective tools for securing top candidates. Highlighting these benefits in job postings and during interviews demonstrates a commitment to employee well-being and career growth.
Provide Onboarding and Continuous Development
A structured onboarding process is essential for integrating new Clinical Laboratory Scientists into the team and setting them up for long-term success. Begin with a comprehensive orientation that covers organizational policies, laboratory safety protocols, and an overview of the laboratory's mission and values. Assign a mentor or peer buddy to guide the new hire through their first weeks, providing support and answering questions about daily workflows and equipment operation.
Hands-on training should include detailed instruction on laboratory instruments, information systems, and quality control procedures. Schedule regular check-ins to assess progress, address challenges, and provide constructive feedback. Encourage participation in team meetings, continuing education sessions, and cross-training opportunities to foster a sense of belonging and professional growth.
Effective onboarding also involves setting clear performance expectations and providing resources for ongoing learning. Develop a personalized training plan that outlines key milestones and competencies to be achieved within the first 90 days. Solicit feedback from the new hire to continuously improve the onboarding experience. By investing in a thorough and supportive onboarding process, organizations can accelerate productivity, reduce turnover, and cultivate a culture of excellence in laboratory science.
Try ZipRecruiter for free today.

