Funny thing about measurement uncertainty - it's not always clear how to calculate it. Particularly when clinically significant bias exists.

There may be 50 ways to leave your lover, but how many ways can you break the "Westgard Rules"? Can you guess? You may be surprised by the possibilities.

Standarization or Standarisation? Harmonization or Harmonisation? We seem to be headed toward a schism in performance specifications, rather than a consensus. Here's a current comparison of Global Performance Specifications for Chemistry Assays.

By mid-October 2020, the list of methods for SARS-COV-2 testing (molecular, antigen, rapid, and serology), broke the 870 mark.  Rather than ask laboratories to evaluate more than 870 possibilities, we've narrowed the candidates down to a short list.

We've talked about Westgard Rules for decades, and we've talked about Six Sigma for years. So what happens when we try to talk about both at the same time? Westgard Sigma Rules

Expanding on a previous lesson on Clinical Agreement, Dr. Westgard discusses the Predictive Value of a Laboratory Test