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# Vitamin D Mass Spectrometry Test Put Into Class 2
- URL: https://www.fdaweb.com/vitamin-d-mass-spectrometry-test-put-into-class-2/
- Published: 2017-11-07T12:00:00.000Z
- Updated: 2026-09-14T23:00:28.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5140068

*Federal Register* notice: FDA has classified the total 25-hydroxyvitamin D mass spectrometry test system into Class 2 (special controls). The action was in response to a 3/20 *de novo* request by AB Sciex for its Vitamin D 200M Assay for the Topaz System. To view the notice, click [here](https://www.gpo.gov/fdsys/pkg/FR-2017-11-07/pdf/2017-24161.pdf?ref=fdaweb.com).