WSLH Proficiency Testing serves laboratories by providing proficiency testing services plus unparalleled customer service at a competitive price.

Since 1966, our mission has been to improve patient testing and public health by administering robust proficiency testing programs that promote education, quality laboratory testing, and professional competency.

Tour our site to view our wide array of ordering options including quality assurance, calibration verification/linearity, and continuing education.

Reliable, affordable, and easy-to-use
proficiency testing products with rapid access to results

Ease the burden on staff

-PT Data Upload
-Training tutorials
-14-day average turnaround time
-Customized continuing education

How can we best serve your facility?
We want to know! Contact us today

WSLH Proficiency Testing is approved by CMS and accepted by CAP, COLA, and The Joint Commission



Learn more & stay connected

• View our 2021 catalog online
• WSLH PT’s eNews Sign up
• Visit our video tutorial library
• Follow WSLH PT on LinkedIn

PT Data Upload

Now available for 2021

• Save time
• Reduce data entry
• Handle PT data like patient data
To learn more, contact
WSLH PT Customer Service:


New Products for 2021

Visit our catalog page to order

SARS-CoV-2 Antigen (CVW)
ARS-CoV-2 Serology (SCA)
SARS-CoV-2 Molecular – 3 Samples (CMW)
SARS-CoV-2 Molecular – 5 Samples (CM)
Respiratory Multiplex: New SARS-CoV-2 Analyte


Contact WSLH Proficiency Testing | (800) 462-5261 | ptservice@slh.wisc.edu|