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Human Reference Manual

03/03/2020:  Effective immediately Mayo Labs will no longer be accepting samples for the RESPVSO test (Viral Culture, Respiratory, VRESP).  This is to prevent inadvertent culture of SARS-CoV-2, the cause of COVID-19.  
(VRESP continued) Mayo Labs recommends the following alternate testing:  For nasopharyngeal swabs order RESPM, Respiratory Pathogen Panel, PCR Nasopharyngeal.  For bronchoalveolar lavage or bronchial washings, order RESLR, Respiratory Pathogen Panel, PCR.
03/20/2020:  Per Mayo Labs:  Effective immediately test HIVPR (HIVPRSO-HIV-1 Genotype Drug Resistance to Protease and Reverse Transcriptase Inhibitors, Plasma) is non-orderable. 
03/23/2020:  At Marshfield Labs site, test code GH (Hemoglobin A1C) may have a slower TAT due to batching of samples.  Samples that arrive in appropriate lab dept. before 3:30 pm M-F, will be run the same day as receipt, but may not be run w/in 2 hrs.
07/10/2020:  The following tests may be delayed due to testing schedule changes:   HS12PCR and VZVPCR (lesion sources only). 
06/18/20: Due to a manufacturer's reagent issue, Rapid Plasma Reagin testing (RPR) will be sent to Mayo Labs.  This will cause delayed results for syphilis tests where the RPR test is reflexed or ordered alone.  In-house RPR testing should resume Sept 1.
06/24/2020:  Due to a reagent backorder, testing for Mayo test PINP (PINPSO) will be delayed.  The test remains orderable and specimens received at Mayo Labs will be stabilized.  Testing will be performed once reagents are received. 
06/25/2020:  Per Mayo Labs:  All cytogenetic FISH testing is currently exceeding published turn-around times (TAT).  The average TAT for any FISH testing is ranging from 15-18 days.  They are working to reduce the delays as quickly as possible. 
06/29/2020:  Per Mayo Labs:  CLLFSO - Chronic Lym Leuk, FISH (CLLF) Test Code:  CLLFSO is currently down.  Recommended Alternative Test:  FISH, B-Cell Chronic Lymphocytic Leukemia Panel  Test ID: FBCEL   
06/29/2020:  Per Mayo Labs:  FMDSSO - Myelodysplastic Syn FISH(MDSF) is down.  Test Code:  FMDSSO  Recommended Alternative Test:  FISH, MDS/Myeloid Panel, -5/5q-, -7/7q-, +8, 20q-  Test ID: FFMDS
07/06/2020:  Per Mayo Labs; 2,3-Dinor-11Beta-Prostaglandin F2 Alpha, Urine test (23BPG) results are delayed due to assay performance issues.  The test will remain orderable and samples will be stabilized and stored at Mayo Labs. 
07/09/2020: The following tests may have delayed results (up to 2 days for results):  AAT, B2M, CERULO, CYC, HAPTO, PREALB, ASO, C-3, C-4, RA-IGM, CTDP.
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Welcome to Marshfield Labs - Reference Services

Marshfield Labs Reference Diagnostics was established in 1973 to serve the needs of physicians throughout Wisconsin, Upper Michigan and Eastern Minnesota. We are a division of the Marshfield Clinic, a highly regarded private medical and research institution, located in Central Wisconsin.

As part of a large medical and research institution, we offer a comprehensive menu of laboratory tests. Our Research Foundation promotes the development of new assays; continually expanding our list of available tests. Guidance in interpretation and utilization of our extensive test menu is provided by our team of pathologists and PhDs.

Working together to meet your needs every day is the goal of our Marshfield Lab staff. We support diagnostic laboratory medicine by providing:

  • An extensive test menu of over 1000 clinical and anatomic tests procedures
  • Accurate and timely testing
  • Convenient pickup through ground and air courier services
  • Results when you need them online, fax, interfaced
  • Access to our service through our Web Portal

We look forward to working with you.

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