test updates

New, updated or discontinued testing requirements, methodologies, etc.

Effective February 21, 2023, Provider Performed Microscopy requests for a peripheral blood smear will have a name change.


Effective January 3, 2023, Wisconsin Diagnostic Laboratories (WDL) will no longer be performing PF4 IgG for heparin antibodies in-house.


Effective Dec. 6, 2022, Wisconsin Diagnostic Laboratories (WDL) and the Froedtert Health Laboratory Enterprise will be adding an enhancement to flag all results above the clinical cut-off for DVT and PE established by individual assay vendors.


Effective Oct 17, 2022, Wisconsin Diagnostic Laboratories (WDL) and Froedtert Health Laboratories will transition to reporting Total Nucleated Cell Count (TNC) instead of White Blood Cell Count (WBC) in body fluid and CSF cell count analysis.


Effective Sept. 14, 2022, Wisconsin Diagnostic Laboratories (WDL) will offer fasting versions of the Basic Chemistry Panel, Comprehensive Metabolic Panel, and Lipid Panel.


Effective July 29, 2022, WDL will no longer be reporting a critical value of >15% reticulocytes in infants 0-29 days old.


Effective June 14, 2022, The Froedtert & the Medical College of Wisconsin health network is changing the calculation of estimated glomerular filtration rate (eGFR). 

Effective May 2, 2022, Wisconsin Diagnostic Laboratories (WDL) will bring testing in-house for Platelet Factor 4 for Heparin Antibodies.


Effective Mar. 22, 2022, for all von Willebrand testing performed at WDL and outside reference laboratories, please utilize the Order Mnemonic when ordering testing.


Effective Feb. 8, 2022, WDL will convert to the Roche total antibody tests for SARS-CoV-2 nucleocapsid and spike antibodies.


Effective Jan. 24, 2022, Froedtert & the Medical College of Wisconsin providers can utilize the CD3 and CD33 Enrichment test in Epic to request Chimerism Testing.