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Greatly improved Vitamin D testing repeatability – May 2020

Improved Repeatability of a Vitamin D Assay in Plasma Samples Obtained From Mechanical Separator Tubes

J Appl Lab Med. 2020 Mar 1;5(2):423-425. doi: 10.1093/jalm/jfz011.
Anne L Bruinen 1, Marcel J W Janssen 1

VitaminDWiki

Have seen no indication that these separator tubes are in wide-spread use
Thee were no citations of this study as of June 2021

Vitamin D testing accuracies, including dried blood spot – Jan 2020
Vitamin D deficiency of a group - 15 pcnt to 48 pcnt (depends on tester used) - Nov 2017
Big differences (~10 ng) in vitamin D test results, even when using the same type of tester – Aug 2015
4 popular vitamin D testers gave very different results (no surprise) – June 2021

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Greatly improved Vitamin D testing repeatability – May 2020

2631 visitors, last modified 28 Jun, 2021,

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- Vitamin D deficiency of a group - 15 pcnt to 48 pcnt (depends on tester used) - Nov 2017 Problems with Vitamin D Testing – chapter – Aug 2019 Big differences (~10 ng) in vitamin D test results, even when using the same type of tester – Aug 2015

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Tests for Vitamin D 149

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ID	Name	Comment	Uploaded	Size	Downloads
13858	Separation.jpg		admin 24 May, 2020	16.77 Kb	638
13857	Separator tubes sci-hub.pdf	PDF 2020	admin 24 May, 2020	141.96 Kb	220

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