Hani Jouihan Author Answered Aug 2, 2013
Division of Endocrinology, Gerontology and Metabolism, Stanford University School of Medicine, USA
Hi Wil
I would assume it should work, especially that you have already separated the plasma, so no blood-cells would interfere with the reading. However, I never tested plasma.
If you decided to try the protocol with plasma, make sure to include a positive control (from liver, for example) and used several different volumes of plasma so that your values are withing the linear range of the standard curve.
Good luck