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Weekend Lab Assistant Jobs in Fontana, CA (NOW HIRING)

Onterris

Laboratory Assistant - Metals

Orange, CA

$17.25 - $20/hr

A Day in the Life As a Full-Time Laboratory Assistant based in our Orange, CA Laboratory , you'll step into the lab where every detail matters. You'll play a key role in supporting the Metals ...

Onterris

Laboratory Assistant - Wet Chemistry

Orange, CA

$17.25 - $20/hr

A Day in the Life As a Full-Time Laboratory Assistant based in our Orange, CA Laboratory , you'll step into the lab where every detail matters. You'll play a key role in prepping and handling samples ...

Clinlab.AI

Clinical Lab Scientist

San Dimas, CA · On-site

$40 - $50/hr

Train and onboard and lead lab assistants and technicians in performing their jobs. * Travel to neighboring labs to provide support and coverage as needed. Test Administration: * Perform lab tests ...

Clinlab.AI

Clinical Lab Scientist

San Dimas, CA · On-site

$40 - $50/hr

Train and onboard and lead lab assistants and technicians in performing their jobs. * Travel to neighboring labs to provide support and coverage as needed. Test Administration: * Perform lab tests ...

Clinlab.AI

Clinical Lab Scientist

San Dimas, CA · On-site

$90 - $120/hr

Train and onboard and lead lab assistants and technicians in performing their jobs. * Travel to neighboring labs to provide support and coverage as needed. Test Administration: * Perform lab tests ...

Clinlab.AI

Clinical Lab Scientist

San Dimas, CA · On-site

$40 - $50/hr

Train and onboard and lead lab assistants and technicians in performing their jobs. * Travel to neighboring labs to provide support and coverage as needed. Test Administration: * Perform lab tests ...

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Weekend Lab Assistant information

See Fontana, CA salary details

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How much do weekend lab assistant jobs pay per hour?

As of Sep 6, 2026, the average hourly pay for weekend lab assistant in Fontana, CA is $20.58, according to ZipRecruiter salary data. Most workers in this role earn between $16.88 and $23.46 per hour, depending on experience, location, and employer.

What is a weekend lab assistant?

A Weekend Lab Assistant supports laboratory operations by preparing samples, maintaining equipment, and assisting with experiments, typically on weekends. Responsibilities may include organizing lab materials, handling specimens, and ensuring safety protocols are followed. This role is common in medical, research, or academic labs and requires attention to detail and basic lab skills. It is ideal for students or individuals seeking part-time lab experience.

What are the typical responsibilities of a weekend lab assistant?

As a Weekend Lab Assistant, your primary duties include preparing and processing samples, maintaining lab equipment, recording data accurately, and ensuring the lab is clean and organized. You may also assist with inventory management, support researchers or senior technicians, and follow established protocols for safety and quality control. Due to the weekend schedule, you may work more independently but will still receive guidance from laboratory supervisors. This role provides valuable hands-on experience in a professional lab environment and the opportunity to collaborate with experienced staff when needed.

What are the key skills and qualifications needed to thrive in the weekend lab assistant position, and why are they important?

To thrive as a Weekend Lab Assistant, you should have a solid background in basic laboratory procedures, safety protocols, and at least a high school diploma or equivalent, with higher education in the sciences preferred. Familiarity with lab equipment such as centrifuges, spectrophotometers, and laboratory information management systems (LIMS) is often required. Strong attention to detail, organizational skills, and effective communication set candidates apart in this role. These abilities are crucial for ensuring accurate sample handling, data recording, and maintaining a safe laboratory environment during non-standard work hours.

Can you get a weekend lab assistant job with no experience?

Weekend lab assistant positions often do not require prior experience, as employers may provide on-the-job training. Basic skills such as attention to detail, ability to follow safety protocols, and familiarity with laboratory equipment can be sufficient for entry-level roles.

How many hours do weekend lab assistants work?

Weekend lab assistants typically work part-time hours, often ranging from 4 to 8 hours per shift on weekends. The exact schedule depends on the employer's needs and may include morning or afternoon shifts, with some positions requiring flexibility for additional hours during busy periods.

How much does a weekend lab assistant get paid?

Weekend lab assistants typically earn between $10 and $20 per hour, depending on the location, experience, and the specific laboratory or organization. Pay rates may also vary based on the complexity of tasks and whether certifications or specialized skills are required.

What qualifications do I need to be a Weekend Lab Assistant?

To be a Weekend Lab Assistant, candidates typically need a high school diploma or equivalent. Relevant skills include attention to detail, basic laboratory procedures, and the ability to work independently during weekend shifts. Some positions may require prior experience or training in laboratory environments.

What are popular job titles related to Weekend Lab Assistant jobs in Fontana, CA?

For Weekend Lab Assistant jobs in Fontana, CA, the most frequently searched job titles are:

What job categories do people searching Weekend Lab Assistant jobs in Fontana, CA look for?

The top searched job categories for Weekend Lab Assistant jobs in Fontana, CA are:

What cities near Fontana, CA are hiring for Weekend Lab Assistant jobs?

Cities near Fontana, CA with the most Weekend Lab Assistant job openings:

Weekend Lab Assistant jobs near you
Infographic showing various Weekend Lab Assistant job openings in Fontana, CA as of August 2026, with employment types broken down into 1% As Needed, 73% Full Time, 23% Part Time, 1% Temporary, and 2% Contract. Highlights an 94% Physical, 1% Hybrid, and 5% Remote job distribution, with an average salary of $42,814 per year, or $20.6 per hour.

Laboratory Assistant

St Bernardine Medical Center

San Bernardino, CA

$27.71 - $33.13/hr

Per diem

Posted 11 days ago

Job description


Job Summary and Responsibilities

As our Lab Assistant, you will play a crucial role in solving diagnostic mysteries, bringing us one step closer to effectively treating patient illnesses and injuries.

Every day, you will utilize your expertise and our advanced technology to precisely collect, prepare, and process a diverse range of patient specimens (blood, urine, tissue, etc.) for various diagnostic tests.

To be successful in this role, you will possess a foundational understanding of laboratory procedures, demonstrate meticulous attention to detail, and maintain an eager commitment to continuous learning and professional development.

Responsibilities: 

  • The lab assistant must be able to demonstrate the knowledge and skills necessary to provide appropriate care relative to the patient's age-specific needs.
  • This lab assistant will play a critical role in the Emergency Room schedule
  • Assist with specimen processing, including labeling, centrifuging, and aliquoting.
  • Prepare reagents and solutions according to established protocols.
  • Maintain laboratory equipment and supplies to ensure cleanliness and proper functioning.
  • Perform routine lab tasks such as washing glassware, sterilizing instruments, and preparing culture media.
  • Assist with data entry and record-keeping, ensuring accuracy and compliance with relevant regulations.
  • Assist with other tasks as assigned by the laboratory supervisor.
  • Will be required to work in the Emergency Room

This position is represented by SEIU-UHW and is covered by the terms and conditions of the applicable collective bargaining agreement.

Job Requirements
  • Minimum of six (6) months as a laboratory phlebotomist is required.
  • California Certified Phlebotomy through the Department of Public Health required. California Phlebotomy Certification
Where You'll Work

Founded in 1928, Dignity Health - St. Bernardine Medical Center is a 342-bed, acute care, nonprofit hospital located in San Bernardino, California. Serving nearly 100,000 patients annually, the hospital offers a full complement of services including a Level III NICU, heart care, stroke care and orthopedics. Additionally, St.Bernardine Medical Center has been recognized as an LGBTQ+ Healthcare Equality High Performer by the Human Rights Campaign Foundation. It is a Joint Commission-certified Primary Stroke Center and was recently awarded AMA/ASA’s Get the Guidelines - Stroke Gold Plus Quality Achievement, recognizing the hospital’s commitment to providing the best stroke care. It was named one of Healthgrades America’s 100 Best Hospitals for Prostate Surgery in 2026.

One Community. One Mission. One California 

Qualifications:
  • Minimum of six (6) months as a laboratory phlebotomist is required.
  • California Certified Phlebotomy through the Department of Public Health required. California Phlebotomy Certification
Employment Type: PRN

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