FDA / approval of Nichols Vitamin D Assay ?

[Guest guest]

I have been unable to get my vitamin D level tested for well over a month

and have been told it is beacuse of irregularities in the Nichols assay

used. [ Something to do with instrument calibration going up the spout.].

However, it all seems a bit of a mystery.

Nothing here:

http://www.nicholsdiag.com/products/bone-descrip.htm#25HyD

Stumped here:

http://www.fda.gov/opacom/hpnews.html

Has anyone else been unable to obtain vitamin D levels recently ? Sammy.