Low-cost Vitamin D testers (two yes-no tests for 11 dollars) - 2024
Update 2023: Two at-home tests for $11 - Amazon UK
Even lower cost if you have a Amazon Prime account in the UK
Founder of VitaminDWiki bought a bunch of these and gave them away free at his Vitamin D presentation to a group of Icelanders March 2023

Nanospeed must buy many testers and expensive readout to get quantiative results
200 quantitive testers $2,000 ( in packs of 25)
Single readout device (in nmol or ng/mL. made by CUE) costs $600
10 minute time delay to get test results
You can run several tests concurrently
Approximately 12% accuracy (example: within 5 ng of 40 ng)
"correlation coefficient of 93.5% in comparison to LCMS assay"
Vitamin D tests costing 4X-10X as much have accuracies of about 5%
Have not been informed about FDA approval for use in the US
Less expensive and much faster (10 minute Point of care test)



Download the PDF from VitaminDWiki
Nanospeed in Canada started by making Vitamin D testers with Yes/No capability
Yes/No of > 30-36 ng
Their original device can be used at home – no readout device necessary
They have sold > 1,000,000 of those testers as of 2018

For more information, contact Seema Gupta at [seema@nanospeed.ca]
See also VitaminDWiki
Tests for Vitamin D category listing has items which includes the following
Vitamin D deficiency of a group - 15 pcnt to 48 pcnt (depends on tester used) - Nov 2017
Vitamin D testing in Spain increased 3X in 2 years (considering 28,000,000 people) – Oct 2017
France restricts Vitamin D testing to 4 health problems, paper proposes 5 more – Nov 2016
Vitamin D test costs Obamacare pregnant woman 214 dollars (vs 6 dollars for a bottle) – Oct 2015
- Often $214 is out-of-pocket money
50,000 IU monthly safe to take without any vitamin D testing – RCT Dec 2013
- VitaminDWiki and many others recommend 50,000 IU of vitamin D every two weeks
Note: A blood test does NOT indicate the amount of Vitamin D actually getting to the cells
5 genes can restrict the vitamin D in the blood from getting to the cells

- click on image for details
Short URL - https://is.gd/FastVitDtest