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Cls Trainee Jobs in Riverside, CA (NOW HIRING)

Cls Trainee information

See Riverside, CA salary details

$26.6K

$45.4K

$66.2K

How much do cls trainee jobs pay per year?

As of May 29, 2026, the average yearly pay for cls trainee in Riverside, CA is $45,414.00, according to ZipRecruiter salary data. Most workers in this role earn between $34,400.00 and $53,200.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a CLS Trainee, and why are they important?

To thrive as a CLS Trainee (Clinical Laboratory Scientist Trainee), you need a strong background in biology, chemistry, and laboratory procedures, typically supported by a bachelor's degree in a related science field. Familiarity with laboratory information systems (LIS), microscopes, and molecular diagnostic equipment is commonly required, along with compliance training in safety and quality standards. Attention to detail, analytical thinking, and effective communication skills help trainees accurately process samples and report findings. These skills are crucial for ensuring accurate diagnostic results and maintaining high standards of patient care in clinical laboratory environments.

What types of tasks and responsibilities can I expect as a CLS Trainee during my training period?

As a CLS (Clinical Laboratory Scientist) Trainee, you will typically rotate through various sections of the laboratory, such as hematology, microbiology, chemistry, and blood banking. Your daily tasks may include learning to operate specialized lab equipment, performing sample analyses under supervision, documenting results, and adhering to strict safety and quality control protocols. You will work closely with experienced CLS professionals and laboratory supervisors, gaining hands-on experience while gradually taking on more complex responsibilities. This structured training is designed to prepare you for independent practice and eligibility for certification exams, fostering both technical expertise and teamwork skills.

What is a CLS Trainee?

A CLS Trainee is an individual undergoing training to become a Clinical Laboratory Scientist (CLS). This role typically involves working under the supervision of licensed professionals to learn laboratory procedures, safety protocols, and diagnostic testing. CLS Trainees gain hands-on experience with laboratory equipment and develop the skills necessary to analyze biological samples. Upon successful completion of the training program and passing required exams, trainees can become certified CLS professionals.

What is the difference between Cls Trainee vs Cls Technician?

AspectCls TraineeCls Technician
CredentialsTypically requires a high school diploma or equivalent; training programs providedRequires certification or diploma in clinical laboratory science or related field
Work EnvironmentTraining setting, supervised by experienced staffIndependent work in laboratories, performing tests and analyses
Employer & IndustryHospitals, clinics, diagnostic labs during trainingDiagnostic labs, hospitals, research facilities
Common Search & ComparisonOften compared during career planning or entry-level job searchesCompared for career advancement or certification purposes

The main difference between a Cls Trainee and a Cls Technician is that the trainee is in a learning phase, often undergoing supervised training, while the technician is a qualified professional performing laboratory tests independently. The trainee focuses on gaining skills, whereas the technician applies those skills in a work setting.

What cities near Riverside, CA are hiring for Cls Trainee jobs? Cities near Riverside, CA with the most Cls Trainee job openings:
Infographic showing various Cls Trainee job openings in Riverside, CA as of May 2026, with employment types broken down into 56% Full Time, 38% Part Time, 3% Temporary, and 3% Contract. Highlights an 100% Physical job distribution, with an average salary of $45,414 per year, or $21.8 per hour.
Clinical Laboratory Scientist I/II*

Clinical Laboratory Scientist I/II*

County of San Bernardino, CA

San Bernardino, CA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 3 days ago


San Bernardino County rating

7.7

Company rating: 7.7 out of 10

Based on 75 frontline employees who took The Breakroom Quiz

349th of 638 rated public administrative organizations


Job description

Salary: See Position Description
Location : Colton, CA
Job Type: Full-time
Job Number: 26-12020-12021-01
Department: Arrowhead Regional Medical Center
Opening Date: 03/11/2026
The Job
- Only one application is needed to be considered for both levels -
Visit the MOU for more details about the Recruitment & Referral Bonus Program
Arrowhead Regional Medical Center (ARMC) is recruiting for Clinical Laboratory Scientists I and II who perform a wide variety of analytic laboratory procedures and apply laboratory policies and processes in the areas of Chemistry, Serology, Hematology, Coagulation, Urinalysis, Blood Bank and Microbiology. Visit to learn more about ARMC's
Clinical Laboratory Scientists I are considered Trainees and are eligible for promotion to Clinical Laboratory Scientist II upon receipt of a satisfactory work performance evaluation. Incumbents must promote within twelve (12) months or be terminated.
For more detailed information, refer to the Clinical Laboratory Scientist I job description.
Clinical Laboratory Scientists II are considered the Journey-level classification to the CLS series and require the ability to recognize a range of reactions including deviation from the norm.
For more detailed information, refer to theClinical Laboratory Scientist IIjob description.
EXCELLENT BENEFITS & RETIREMENT
To review job- specific benefits, refer to:
Summary of Benefits
Memorandum of Understanding (MOU)
CONDITIONS OF EMPLOYMENT
Shift Availability: ARMC is a twenty-four-hour facility; some shifts include weekends and holidays. Applicants must indicate availability for day, swing, night, rotating, weekends, and holidays. Shift differentials are provided.
Pre-Employment Process: Applicants selected for these positions must pass a background investigation, physical, and verification of employment history and education.
Work Environment: Incumbents are routinely exposed to dangerous chemicals and infectious materials.
Probationary Period: Clinical Laboratory Scientists I are eligible for promotion to Clinical Laboratory Scientist II upon meeting the minimum qualifications and receipt of a satisfactory work performance evaluation. Incumbents must promote within twelve (12) months or be terminated.
Please note: San Bernardino County is not able to consider candidates who will require visa sponsorship at the time of application or in the future.
Minimum Requirements
CLINICAL LABORATORY SCIENTIST I
OPTION 1 - LICENSURE
  • Must possess and maintain a Clinical Laboratory Scientist (CLS) license issued by the State of California, Department of Public Health. A limited license is not considered qualifying; license must have the "MTA" prefix.
    NOTE:If applying under this option, candidates must provide their CLS License number and expiration date in the Supplemental Questionnaire of the online application.

OPTION 2 - EDUCATION & PRE-LICENSURE
  • Graduation from a CDPH approved CLS training program AND eligibilityto sit for the CDPH approved certification examination for California CLS licensure.
    NOTE:Candidates applying under this option must attach proof of successful completion of an approved CDPH CLS training program and eligibility to sit for California CLS licensure to their online application.

-OR-
  • Students currently enrolled in Arrowhead Regional Medical Center's Clinical Laboratory Scientist Program that are one month (30 days) from successfully graduating are eligible to apply.
    NOTE:Candidates applying under this option must attach a letter or notice from their Program Director that indicates they are in good standing in the program and are on-track to graduating within one month (30 days). This option is exclusive to ARMC students and does not apply to students enrolled in programs outside of ARMC.

CLINICAL LABORATORY SCIENTIST II
Candidates must possess the following License and Experience:
LICENSE: Must possess and maintain a Clinical Laboratory Scientist (CLS) license issued by the State of California, Department of Public Health.
NOTE: A limited license is not considered qualifying; license must have the "MTA" prefix.
EXPERIENCE: One (1) year of full-time experience as a Clinical Laboratory Scientist.
Desired Qualifications
Applicants with training from a National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) approved institution are desired.
Selection Process
Application Procedure: Applications will be accepted until a sufficient number of qualified applications are received. To receive priority consideration for this excellent opportunity, please complete and submit the online employment application and supplemental questionnaire as soon as possible. Resumes will not be accepted in lieu of the application and/or supplemental questionnaire.
There will be a competitive evaluation of qualifications based on the information provided in your Application and the Supplemental Questionnaire. The most highly qualified candidates, based on the evaluation results, will be referred for an interview. Be sure to include in your application and supplemental questions your experience in meeting the minimum requirements.
All communications regarding the selection process will be via e-mail. Applicants are encouraged to check their e-mail frequently to learn additional information regarding this recruitment. Check your GovernmentJobs account for notifications. Update your firewalls to allow e-mails from San Bernardino County through governmentjobs.com. Update your Spam, Junk, and Bulk settings to ensure it will not spam/block/filter communications from e-mail addresses with the following domain "@hr.sbcounty.gov". Finally, be sure to keep your personal information updated. Taking these steps now will help ensure you receive all communications regarding this recruitment.
To ensure timely and successful submission of your online application, please allow ample time to complete and submit your application before the posted filing deadline. Applicants will be automatically logged out if they have not submitted the application and all required materials prior to the posted deadline. Once your application has been successfully submitted you will receive an onscreen confirmation and an email. We recommend that you save and/or print these for your records.
If you require technical assistance, follow this link to review the Government Jobs online application guide, or contact their Toll-Free Applicant Support line at (855) 524-5627. Please note that Human Resources is not responsible for any issues or delays caused by the computer or browser used to submit the application.
EEO/ADA: San Bernardino County is anEqual Employment Opportunity (EEO)and Americans with Disabilities Act (ADA) compliant employer, committed to providing equal employment opportunity to all employees and applicants.
ADA Accommodation: If you have a disability and require accommodations in the testing process, submit theSpecial Testing Accommodations Request Form within one week of a recruitment filing deadline.
Veterans' Preference: Eligible veterans and their spouses or widows/widowers who are not current County employees may receive additional Veterans' Preference points. For details and instructions on how to request these points, please refer to the Veterans' Preference Policy
For more important details, review the Applicant Information and County Employment Process
Professional Unit
San Bernardino County offers a range of benefit programs for employees and their eligible dependents. These include health, dental, vision, and life insurance, as well as a variety of other voluntary benefits. Programs and benefit amounts vary and are based on bargaining unit, family size, hire date, plan selection, and number of hours worked.
Please review the appropriate * for more information
Refer to the appropriate MOU, contact the County's Employee Benefits and Services Division at (909) 387-5787 or visit the for more detailed information.
*Retirement benefits subject to change.
01
Instructions: The information from your complete County Application and the Supplemental Questions below will be used to determine whether applicants meet the minimum requirements for this position, and will provide the basis for a competitive evaluation with other candidates in the selection process. It is to your advantage to provide complete, organized and detailed responses to each question. Do not refer to a resume. All work experience listed on the Supplemental Questionnaire must also be listed in the "Work Experience" section of your County Application in order to be evaluated.
  • I have read and understand the above statement.

02
Shift Availability: Must be available to work ALL SHIFTS (Day, Evening, Night, Weekend, Rotating, Swing, and Holidays). Note: if you do not indicate availability for all shifts, your application will be disqualified.
  • Yes, I am available to work all shifts (Day, Evening, Night, Weekend, Rotating, Swing, and Holidays).
  • No, I am not available to work all shifts.

03
License: Do you possess a Clinical Laboratory Scientist (CLS) license issued by the State of California Department of Public Health?
  • Yes
  • No

04
License: Do you possess a generalist license which includes the "MTA" prefix?
  • Yes
  • No

05
License: Provide your California CLS license number and expiration date.If you do not possess a California CLS license, indicate N/A.
06
Education & Pre-Licensure: If you do not possess a CLS license, have you graduated from a CDPH approved CLS training program, and are you eligible to sit for a CDPH approved certification examination for California CLS licensure?NOTE: Proof of successful completion of an approved CDPH CLS training program and eligibility to sit for California CLS licensure must be attached to your online application or submitted via email to employment@hr.sbcounty.gov with the Subject Line: CLS I Attachment.
  • Yes
  • No

07
ARMC Students: Are you a current ARMC CLS student scheduled to graduate in the next month (30 days)?NOTE: If applying under this option, candidates must attach a letter or notice from their Program Director indicating they are in good standing in the program and are on-track to graduate within one month (30 days).
  • Yes
  • No

08
CLS Experience: Indicate below the area(s) in which you possess experience as a licensed CLS. Check all that apply.
  • Blood Bank
  • Chemistry
  • Coagulation
  • Hematology
  • Microbiology
  • Serology
  • Urinalysis
  • None of the Above
  • Other

09
Experience: If you indicated experience in question above, describe your experience. Include the employer name, dates of employment and equipment used. If no experience, indicate N/A.
10
CLS Experience: Indicate below if you possess six (6) months of experience as a licensed CLS.
  • Yes, I possess at least six (6) months of experience as a CLS
  • No, I do not possess at least six (6) months of experience as a CLS

11
Medical Technology Training: Did you complete your training at a National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) approved institution?
  • Yes
  • No

12
Medical Technology Training: If you completed your training at a NAACLS approved institution, provide the name of the hospital, number of beds, and whether it was a teaching facility. If none, indicate "N/A". Ex. Arrowhead Regional Medical Center (ARMC), 456 bed, acute care teaching hospital. ARMC is a NAACLS approved institution.
13
Applicant Acknowledgement - Notification via email: As part of our efforts to increase efficiency and promote conservation of resources, human resources uses email to communicate with applicants. Therefore, all future communications regarding this recruitment, including applicant status and testing notifications, will be made via email. Each applicant needs their own email address. We strongly encourage you, as an applicant, to ensure that the email address you have provided us with your application is current, secure, confidential, and readily accessible to you. Adjust Spam and/or other filters so that our emails are accepted. Please carefully read any notices that we send you and follow any instructions provided in a timely manner. We will not be responsible in any way if you do not receive our emails (i.e., for the non-delivery of our emails or if you fail to check your e-mail on a timely basis).
  • I acknowledge that I have read, understood, and agree to the above.

14
Applicant Acknowledgement - Application Complete: Thank you for taking the time to complete this application and supplemental questionnaire. Please be sure to review all information provided prior to submitting it as you cannot update or revise it once submitted. Your submitted application will be reviewed and evaluated as is. Please do not refer to a resume or other documentation in lieu of completing the employment history section or responding to the supplemental questions; they will not be reviewed or considered.
Once your application has been successfully submitted, you will receive an onscreen confirmation and an email confirmat...

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