test updates

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


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 June 14, 2022, The Froedtert Health System 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 and the Medical College of Wisconsin providers can utilize the CD3 and CD33 Enrichment test in Epic to request Chimerism Testing.


Effective Dec. 22, 2021, WDL will go live with von Willebrand special coagulation testing in the WDL Main Lab.


Effective Nov. 12, 2021, WDL will update its specimen collection methods to utilize ESwab.


Effective Sept. 25, 2021, WDL will update its syphilis testing reporting methods.


Effective Aug. 23, 2021, WDL will update its syphilis testing reporting methods.

Effective Aug. 11, 2021, SARS-COV-2 (COVID-19) tests performed at WDL with a result of “detected” will no longer be called directly to the client.

Effective May 28, 2021, The sodium citrate "Light Blue Top" Vacutainer tubes are in limited supply due to a nationwide shortage of sodium citrate anticoagulant.


Effective May 27, 2021, WDL will implement a new process for the handling of laboratory specimens collected from patients administered the Cyanokit (Hydroxocobalamin) medication.


Effective May 19, 2021, WDL will change the reference range for Prothrombin Time (PT) testing.


Effective May 6, 2021, WDL will go live with new Special Coagulation testing in the WDL Main Lab, previously had been sent out to reference laboratories.


Effective April 29, 2021, WDL will offer a new in-house SARS-CoV-2 antibody test: SARS-CoV-2 IgG Ab Quantitative Spike (COVIDIGG QT). This test replaces the current send-out test of the same name.


Effective April 1, 2021, additional lab-specific pneumatic tube carriers will be added to the transport system to support use of foam padding for the transport of laboratory specimens.


Effective March 18, 2021, WDL will change the Heparin Therapeutic Range for Activated Partial Thromboplastin Time (PTT).


Effective Feb. 25, 2021, WDL will update its Hepatitis C testing algorithm.


Effective Feb. 8, 2021, WDL will change how eosinophils are reported in the tests noted.


Effective Jan. 28, 2021, WDL provided important information regarding the "UK Variant" strain of COVID-19.


Effective Jan. 28, 2021, WDL published important information regarding respiratory virus testing.