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The Essence: The Best of June 2021

By Anne-Margaret Olsson posted 07-08-2021 15:58

The Artery is your community for finding solutions to your day-to-day clinical chemistry questions. Last month, several answers were found to questions ranging from "Where do you stand on the laboratory harmonization debate?" to “How do labs complete proficiency testing (PT) for sO2?”. Read on for the most discussed on the Artery in June.

Harmonization Across the Globe

“Laboratory harmonization is not just a need but a necessity in the pandemic era,” according to Arterarians. Many believe the U.S. is overdue not only to harmonize more assays, but convert to using a metrological measurement and reporting system of SI units like other countries. Where do you stand in the debate?

Is Double Dilution Necessary?

When diluting quality control (QC) samples, why must laboratorians also dilute high levels in patient samples? Diluent integrity seems to be the most common explanation to this familiar and puzzling question. What has your experience been with diluting QC?

Altered Requirements in Proficiency Testing

How do labs complete proficiency testing (PT) for sO2? Some Arterians say laboratorians can consider any calculations to be acceptable when the assay they derived from is also acceptable. As a calculation derived from pO2, sO2 PT is no longer required if pO2 is being monitored. What are your thoughts?