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The Essence: The Best of August 2022

By Anne-Margaret Olsson posted 17 days ago

  
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 "Does deliberate polydipsia causing hyponatremia in an attempt to dilute a urine drug test qualify as a preanalytical variable? " to “Does your lab reject hemolyzed samples for serum osmolality?".  Read on for the most discussed on the Artery in August.


Water Consumption Prior to a Urine Drug Test
by @David Alter, MD DABCC

Does deliberate polydipsia causing hyponatremia in an attempt to dilute a urine drug test qualify as a preanalytical variable? A question posed by a pathology resident began a great discussion with many opinions and experiences. What’s your take on this topic?

MALDI and ESI for Mass Spectrometry
by @Roland Jones, PhD

When is it better to use matrix-assisted laser desorption/ionization (MALDI) over electrospray ionization (ESI) as an ionization source? Arterians discuss the pros and cons of each option and the scenarios in which one source is more appropriate to use than the other.

Hemolysis and Osmolality
@Martin Abrams, BS.MS

Does your lab reject hemolyzed samples for serum osmolality? Laboratorians share their thoughts and research on the effects of hemolysis. Join the discussion to see if you share similar opinions.

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