The FDA released a proposed LDT rule and stated it will “end its enforcement discretion” of LDTs. Previously, the FDA explored other avenues for regulating LDTs. We will discuss questions relevant to the draft rule and implications to laboratory medicine, including, but not limited to: - What are possible implications of FDA regulation of LDTs? - Is the FDA the appropriate mechanism for this LDT oversight? - What about modernization of CLIA? - What would be the financial cost? - What would be the diagnostic cost?

Dustin Bunch chats with Jennifer Van Eyk on the fine points of her Distinguished Contribution Award lecture from the previous evening. Recorded onsite at MSACL 2023 Monterey in the Exhibit Hall.

Dustin Bunch chats with Tim Collier on some of the nuances of his Michael S Bereman Award for Innovative Clinical Proteomics lecture from the previous afternoon. Recorded onsite at MSACL 2023 Monterey in the Exhibit Hall.

Through connecting genomic and metabolic information, metaproteomics is an essential approach for understanding how microbiomes function in space and time. The international metaproteomics community is delighted to announce the launch of the Metaproteomics Initiative (www.metaproteomics.org), the goal of which is to promote dissemination of metaproteomics fundamentals, advancements, and applications through collaborative networking in microbiome research.

An interview with Lindsey Kirkpatrick, DO, PhD and Nicholas Manicke, PhD discussing the technology behind, and development of, Paper Spray technology, as well as its place in the clinical lab. Read the companion article in JMSACL, Development and validation of a paper spray mass spectrometry method for the rapid quantitation of remdesivir and its active metabolite, GS-441524, in human plasma (https://doi.org/10.1016/j.jmsacl.2022.06.001).

An interview with Richard Yost, co-developer of the Triple Quadrupole Mass Spectrometer. How it was developed and why. Read the companion article in JMSACL at https://www.sciencedirect.com/science/article/pii/S2667145X22000141

A discussion with Thomas Durant and Edward Lee about recent advances in machine learning (ML) for mass spectrometry (MS) data analysis.

Christopher Rose shares his thoughts on single cell proteomics.

Hoda Safari Yadz and Tim Garrett, from the Garrett lab in Florida, join us for a presentation and discussion of their work on the metabolomic and lipidomic characterization of an X-chromosome deletion disorder in neural progenitor cells, hosted by the JMSACL podcast group.

This Mentee/Mentor Scientific Session is a joint presentation that will explore techniques for improving imaging analysis of small molecules, with a focus on neurotransmitters, using data science, and gold (and silver) nanoparticles.

A presentation and discussion with Dr. Owusu on his recently published paper in JMSACL entitled Development and validation of a novel LC-MS/MS assay for C-peptide in human serum.

An introduction of microdroplet electrochemical methods capable of resolving different types of isomers commonly encountered in lipid samples using electrospray ionization mass spectrometry.

Untargeted metabolomics experiments suffer from large proportions of unannotated molecules. Using a reference data-driven approach, we increase the spectral annotation rate by assigning potential sources to molecular features. We have applied this approach using a food reference database to generate diet readouts from clinical samples.

Exposure of blood plasma/serum (P/S) to thawed conditions (> -30 °C) can produce biomolecular changes that skew measurements of biomarkers within archived patient samples, potentially rendering them unfit for molecular analysis. Since freeze-thaw histories are often poorly documented, objective methods for assessing molecular fitness prior to analysis are needed.

In the thrilling conclusion of this four part series, Josh encounters issues with his vacuum manifold, decides to forgo sample preparation, and attempts to validate a dilute-and-shoot mass spectrometry method. Problems are encountered.

Continuing on with mass spectrometry misadventures, this session will discuss our efforts to begin analyzing and evaluating mass spectrometry data.

Good chromatography is essential to any LC-MS/MS method. Setting it up is often one of the earlier steps in developing a new method. Setting up good chromatographic conditions at the start can set you up for success later on. This podcast will discuss our labs efforts to setup chromatographic conditions for the analysis of ethyl-glucuronide and buprenorphine (plus metabolites).

An overview of the impact that Vitamin D status has on the immune system.

The applications of mass spectrometry in the clinical laboratory continue to expand. Unfortunately, not all clinical laboratories have mass spectrometers and there are substantial barriers to bringing in this instrumentation. This webinar will discuss some of these barriers and how we have been able to overcome them in our path towards setting up clinical mass spectrometry testing.