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Per Diem Lab Assistant Jobs in California (NOW HIRING)

PIH Health

Lab Assistant, Per Diem

Whittier, CA · On-site

The Laboratory Assistant performs specimen procurement, accessioning, processing and testing as assigned under the supervision of a licensed Clinical Lab Scientist (CLS). Provides phlebotomy ...

PIH Health

Lab Assistant, Per Diem

Whittier, CA · On-site

The Laboratory Assistant performs specimen procurement, accessioning, processing and testing as assigned under the supervision of a licensed Clinical Lab Scientist (CLS). Provides phlebotomy ...

PIH Health

Lab Assistant, Per Diem

Whittier, CA · On-site

$21 - $34.80/hr

The Laboratory Assistant performs specimen procurement, accessioning, processing and testing as assigned under the supervision of a licensed Clinical Lab Scientist (CLS). Provides phlebotomy ...

Labcorp

Lab Assistant

San Diego, CA · On-site

$17.75 - $20.75/hr

Labcorp is seeking a Lab Assistant to join our teamin San Diego, CA ... Work Schedule: 2nd Shift - This is a Casual/Per Diem position; hours will be "as needed" and the ...

Labcorp

Lab Assistant

San Diego, CA

$17.75 - $20.75/hr

Labcorp is seeking a Lab Assistant to join our team in San Diego, CA ... Work Schedule: 2nd Shift - This is a Casual/Per Diem position; hours will be "as needed" and the ...

Sutter Health

Lab Assistant III

Burlingame, CA · On-site

$38.08 - $53.31/hr

Provides guidance to phlebotomists and lab assistants to promote optimal workflow and rapid problem ... Per Diem/Casual Shift Hours: 8 Days of the Week: Variable Weekend Requirements: One Weekend Shift a ...

Sutter Health

Lab Assistant III

Burlingame, CA · On-site

$38.08 - $53.31/hr

Provides guidance to phlebotomists and lab assistants to promote optimal workflow and rapid problem ... Per Diem/Casual Shift Hours: 8 Days of the Week: Variable Weekend Requirements: One Weekend Shift a ...

Chapman University

General Lab Assistant

Orange, CA · On-site

$50/hr

Posting Details Position Information Position Title General Lab Assistant Position Type Temporary ... Possesses working knowledge of physical therapy in the specialty area per pre-clinical program ...

Chapman University

General Lab Assistant

Orange, CA · On-site

$50/hr

Position Information Position Title General Lab Assistant Position Type Temporary Job Number ... Possesses working knowledge of physical therapy in the specialty area per pre-clinical program ...

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All JobsPer Diem Lab JobsPer Diem Lab Assistant JobsPer Diem Lab Assistant Jobs in California

Per Diem Lab Assistant information

See California salary details

$10

$19

$29

How much do per diem lab assistant jobs pay per hour?

As of Aug 27, 2026, the average hourly pay for per diem lab assistant in California is $19.98, according to ZipRecruiter salary data. Most workers in this role earn between $16.35 and $22.79 per hour, depending on experience, location, and employer.

What is a per diem lab assistant?

Per Diem Lab Assistants are laboratory support staff who work on an as-needed basis rather than a regular, full-time schedule. Their primary responsibilities include preparing samples, maintaining lab equipment, and assisting with testing procedures. Because their hours can vary depending on the laboratory's needs, this role offers flexibility and is often used to cover staff shortages, busy periods, or special projects. Per Diem Lab Assistants are commonly found in hospitals, research institutions, and diagnostic laboratories.

What skills and qualifications are needed to be a per diem lab assistant?

To thrive as a Per Diem Lab Assistant, you need a basic understanding of laboratory procedures, specimen handling, and often a high school diploma or equivalent. Familiarity with laboratory information systems (LIS), phlebotomy equipment, and proper safety protocols is commonly required. Attention to detail, strong organizational skills, and effective communication help you excel in this fast-paced, flexible role. These skills and qualities are crucial to ensure accurate results, maintain lab efficiency, and support patient care in variable work schedules.

What are the most common challenges faced by per diem lab assistants, and how can they be managed?

Per Diem Lab Assistants often encounter challenges such as adapting quickly to different lab environments, managing fluctuating work schedules, and staying updated on diverse testing procedures. Since the role typically involves filling in for full-time staff or covering peak workloads, strong adaptability and time management skills are essential. Building good communication with permanent staff and being proactive in asking questions can help ease transitions and ensure quality work. Additionally, familiarizing yourself with the specific protocols of each lab assignment can make your shifts smoother and more efficient.

What is the difference between Per Diem Lab Assistant vs Full-Time Lab Technician?

AspectPer Diem Lab AssistantFull-Time Lab Technician
CredentialsHigh school diploma or equivalent; some roles may require certificationAssociate's or Bachelor's degree in a related field; certification may be preferred
Work EnvironmentTemporary, flexible shifts in laboratories, hospitals, or clinicsFull-time, permanent positions with regular hours in similar settings
Employer & Industry UsageHospitals, research labs, clinics; used for short-term staffing needsHospitals, diagnostic labs, research institutions; core staff roles

Per Diem Lab Assistants typically work on a temporary, flexible basis with minimal credentials, focusing on support tasks. Full-Time Lab Technicians hold permanent roles with more advanced qualifications, performing routine testing and analysis regularly. The main difference lies in employment status, credentials, and job stability.

What are popular job titles related to Per Diem Lab Assistant jobs in California?

For Per Diem Lab Assistant jobs in California, the most frequently searched job titles are:

What job categories do people searching Per Diem Lab Assistant jobs in California look for?

The top searched job categories for Per Diem Lab Assistant jobs in California are:

What cities in California are hiring for Per Diem Lab Assistant jobs?

Cities in California with the most Per Diem Lab Assistant job openings:

Per Diem Lab Assistant jobs near you
Infographic showing various Per Diem Lab Assistant job openings in California as of August 2026, with employment types broken down into 2% As Needed, 79% Full Time, 16% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $41,562 per year, or $20 per hour.

Certified Phlebotomy Technician ( CPT 1)/Lab Assistant

Placerville, CA

Marshallmedical
See more jobs at Marshallmedicalexternal

$22.69 - $27.23/hr

Per diem

Re-posted 18 hours ago

Job description

Department:

Specimen Collection

Shift:

Variable (United States of America)

Employee Type:

Regular - Per Diem

Per Diem Type (if applicable):

Non-RN Per Diem 2

Minimum Pay Range:

$22.69 - $27.23
Job Description:

POSITION SUMMARY

The Certified Phlebotomy Tech (CPT) 1 or 2/Lab Assistant performs various duties as needed, to ensure the smooth flow of patients, specimens and information to and from the Laboratory. This position may work in various locations throughout Marshall Medical Center, assisting with Inpatient, Outpatient, and/or Emergency in order to meet the needs of the department. Performs specific duties such as venipuncture, order entry, specimen processing, legal blood draws and chain of custody drug screening procedures, in addition, CPT 2's will perform Arterial Blood Gas collections. The CPT 1 or 2/Lab Assistant will assist in training new lab personnel, externs and students while maintaining good public relations by answering phones in a cordial and helpful manner. Interacts with patients in a friendly and professional manner and ensures careful handling of infectious materials to protect all personnel.

POSITION QUALIFICATIONS

Education/Licensure/Certification:

  • Current Certified Phlebotomy Technician (CPT) 1 or 2 certification from State of California required.

  • HS diploma or equivalent experience or education with emphasis on science courses required.

Knowledge/Skills:

  • Previous laboratory experience and/or graduation from medical/lab assistant school required.

  • Knowledge of phlebotomy, specimen processing, legal blood draws and chain of custody required.

  • Familiarity with Medical Terminology, computers and basic typing skills required.

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