Lab resources for you
We understand the challenges you face in today's health care environment. Marshfield Labs provides a laboratory resource you can depend on.
We work with you to provide the services you need whether you're a small community hospital lab or part of a large health care system.
We support diagnostic medicine by offering:
- An extensive test menu of more than 1,000 clinical and anatomic test procedures
- Accurate and timely testing
- Convenient pickup through ground and air courier services
- Results when you need them online or by fax
- Online access to our services through our Web Portal
Our experienced team of pathologists and PhDs are available for consultation on test utilization and interpretation as well as discussing difficult cases. Marshfield Labs has also developed a very successful Medical Directorship and Lab Consultation Service through our Outreach Program.
In addition to health care systems, we are eager to work with businesses to help develop their wellness program testing.
We look forward to working with you.
Contact Clinical Lab
Call: (800) 222-5835
Testing services offered
- Chemistry/Urinalysis
- Cytogenetics
- Cytopathology
- Dermatopathology
- Electron Microscopy
- Flow Cytometry
- GI/Liver Pathology
- Hematology
- Histology
- Immunodiagnostic
- Immunohistochemistry
- Microbiology
- Molecular Epidemiology
- Molecular Pathology
- Neuromuscular Pathology
- Renal Pathology
- Transfusion Services
Clinical lab newsletters
2026 Newsletters
January 19, 2026
STI Testing Collection Changes
2025 Newsletters
2024 Newsletters
July 2, 2024
Change in HPV (Human Papillomavirus) Testing
June 11, 2024
Enteric Viral Panel Nucleic Acid Assay Now Available
May 22, 2024
Discontinuation of Wet Prep Microscopy for Trichomonas vaginalis
May 1, 2024
Update Changes to Urine Drug Toxicology Test Menus
April 4, 2024
Discontinuation of Enterovirus PCR Testing for CSF
April 1, 2024
Staphylococcus aureus screening by Nucleic Acid Amplification Method
March 13, 2024
Name Changes to microbial organism database
March 11, 2024
Modifications to AST panel for anaerobic bacteria
March 11, 2024
Changes in Testing for Group B Streptococcus
February 8, 2024
New Test Offered for Tuberculosis (TB) Testing
February 8, 2024
Modifications to AST panel staphylococcal isolates
January 25, 2024
Modifications to AST panel for streptococcal isolates
January 11, 2024
Change in Platform for Vaginitis Testing
January 3, 2024
Changes to AST panel for enterococcal isolates and Updated Reporting to Confirmatory Lyme Serology Testing
2023 Newsletters
July 11, 2023
New antimicrobial susceptibility testing (AST) interpretive criterion: Susceptible Dose-Dependent
May 1, 2023
Discontinuation of In-House Ove and Parasite, Special (Complete) [OPS]
April 11, 2023
Changes in the ordering of immuno-suppressant drugs
March 6, 2023
N-Terminal Pro B-Type Natriuretic Peptide Testing
February 1, 2023
Changes to Lyme Disease Serologic Testing
2022 Newsletters
October 17, 2022
Changes to the Ordering of Serum Protein Electrophoresis (SPEP) Tests
October 21, 2022
New Equation for Estimating Glomerular Filtration Rate (eGFR)
July 20, 2022
Updates to ENA Panel, OB Panel and Fecal WBC Testing
June 1, 2022
Changes to Film Array Respiratory Panel (FARP) Test
April 7, 2022
New Test Offered for Intestinal Parasites


