At Washington County Memorial Hospital, our certified laboratory technologists, technicians, and phlebotomists deliver accurate, timely test results to support your health and treatment. We proudly serve Potosi, Washington County, and surrounding communities with a full range of diagnostic lab services.
At Washington County Memorial Hospital, our certified laboratory technologists, technicians, and phlebotomists deliver accurate, timely test results to support your health and treatment. We proudly serve Potosi, Washington County, and surrounding communities with a full range of diagnostic lab services.
Comprehensive Diagnostic Testing
Our lab provides services for:
- Inpatients at WCMH
- Outpatients from local clinics
- Emergency Department and urgent care patients
- Partner clinics, nursing facilities, and home health agencies
All testing is overseen by a consulting pathologist to ensure the highest quality and precision.
Tests and Services Offered
- Basic chemistry panels and hematology
- Coagulation tests and urinalysis
- Thyroid function tests and cardiac markers
- Prostate Specific Antigen (PSA) testing – not performed in-house; instead, we send the cultures to a reference lab for testing.
- Microbiology and culture testing — not performed in-house; instead, we send the cultures to a reference lab for testing.
- Blood bank and transfusion services
A written order from a physician or nurse practitioner is required for all lab tests. Some tests may require fasting or special preparation—your provider will give you instructions.
Location & Contact
Washington County Memorial Hospital – Laboratory Services
573-438-5451 (main hospital line – ask for the Lab)
Hours of Operation
Monday – Friday: 6:00 a.m. – 6:00 p.m.
Saturday: 6:30 a.m. – 12:00 p.m.
Sundays & Holidays: Inpatient care only
Why Choose WCMH Laboratory
- Fast, accurate results to support timely diagnoses
- Convenient location in Potosi, reducing travel for testing
- Experienced professionals using modern technology
- Community-focused care, backed by Washington County Memorial Hospital’s trusted reputation
Prepare for Your Visit
- Bring your provider’s lab order and insurance card.
- Follow any fasting or pre-test instructions carefully.
- All lab results and personal health information are kept strictly confidential under HIPAA and Missouri law.