Filtering removes the visible cloudiness by trapping aggregates, but you're left with a solution that contains far less peptide than the original concentration
In fact, blood glutathione decrease allowed identification of NYHA class I patients from controls, whereas a large increase in blood sTNFR1 characterized patients of NYHA class IV
(PubMed) Jones W, Li X, Qu ZC, Perriott L, Whitesell RR, May JM
For example, some MIC B12 (Methionine, Inositol, Choline + B12) blends are more sensitive to temperature and should be refrigerated both before and after first use
Furthermore, we determined the flux of glycolytic carbon through the pyruvate dehydrogenase complex (PDC) by stable-isotope labeling with 13 C-glucose