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Lab Support Technician III (PRN) Days

Mercy
Mercy Salary
Saint Louis, MO Per Diem
POSTED ON 4/13/2026
AVAILABLE BEFORE 10/13/2026

We’re a Little Different

 

Our mission is clear. We bring to life a healing ministry through our compassionate care and exceptional service.

At Mercy, we believe in careers that match the unique gifts of unique individuals – careers that not only make the most of your skills and talents, but also your heart. Join us and discover why Modern Healthcare Magazine named us in its “Top 100 Places to Work.”


Overview:

 

The Laboratory Support Technician (LST III) is part of the provider care team acting in a support capacity for reports, data and scheduling functions of the laboratory. This position is responsible for accurate, timely and effective provision of laboratory support mechanisms. The LST III will be required to exhibit excellent customer service skills in line with the Mercy Signature Service Standards with all customer interactions. The LST III is responsible for the skillful acquisition of all required types of specimens for laboratory testing utilizing safe, accurate, effective, professional methodologies while observing HIPAA confidentiality requirements and lab policies as required. The LST III will be responsible for all processing, transport and referral of all types of laboratory specimens and reports as required. The LST III is responsible for limited laboratory testing and for assisting technologists in all appropriate test methods as required.Performs duties and responsibilities in a manner consistent with our mission, values, and Mercy Service Standards.


Qualifications:

  • Education: High school diploma or equivalent required.
  • Licensure: Experience: One year phlebotomy or clinical laboratory experience. Previous Mercy LST II designation or equivalent experience.
  • Certifications: The LST III position must Satisfactorily complete the specific facility competencies, including but not limited to checklist, written examination, management observation, etc., to be eligible for advancement to the next higher job description.Have no active disciplinary actions or active performance improvement plans.Successfully complete the probationary period.
  • Preferred Education: College level chemistry, Biology or other Science courses.
  • Preferred Experience: Phlebotomy preceptor experience.

We Offer Great Benefits:


Day-one comprehensive health, vision and dental coverage, PTO, tuition reimbursement and employer-matched retirement funds are just a few of the great benefits offered to eligible co-workers, including those working 32 hours or more per pay period!

 

We’re bringing to life a healing ministry through compassionate care.


At Mercy, our supportive community will be behind you every step of your day, especially the tough ones. You will have opportunities to pioneer new models of care and transform the health care experience through advanced technology and innovative procedures. We’re expanding to help our communities grow. Join us and be a part of it all.


What Makes You a Good Match for Mercy?


Compassion and professionalism go hand-in-hand with us. Having a positive outlook and a strong sense of advocacy is in perfect step with our mission and vision. We’re also collaborative and unafraid to do a little extra to deliver excellent care – that’s just part of our commitment. If that sounds like a good fit for you, we encourage you to apply.

 

 

EEO/AA/Minorities/Females/Disabled/Veterans

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