WSLH Proficiency Testing, Your PT Provider Since 1966

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WSLH Proficiency Testing delivers affordable, high-quality laboratory proficiency testing products with rapid access to results.
Connect with our team of technical experts to request a free, no-obligation quote.

Your Lab, Our Mission

Assuring patient testing accuracy is your laboratory’s primary focus. Backed by a national public health laboratory and a Big Ten university, WSLH Proficiency Testing serves as a true extension of your quality management team to support that mission.

We provide the reliable data, easy-to-use products, and dedicated support you need to navigate compliance with absolute confidence. Approved by CMS, and accepted by CAP, COLA, & The Joint Commission.

Reliable, affordable, and easy-to-use proficiency testing programs

Explore Our Programs | View Our 2027 Catalog

Expert Guidance: One-on-one consultations with dedicated Medical Technologists.
Order Flexibility: Low-cost replacement, off-cycle, and evaluation samples.
Staff Efficiency: Staggered shipments designed to reduce lab workload.
Fast Reporting: Industry-leading 14-day average turnaround on evaluations.
Digital Tools: Instant access to clinical proficiency testing worksheets and instructions.