Table 2.

Heparin coating of Fe₃O₄@heparin NP prepared under different heparin/Fe₃O₄ ratio, determined by the colorimetric assay.

Starting Heparin (g/mL)	Starting NP (g/mL)	Heparin/NP w/w	TB assay heparin coating (mg)
0.033	0.003	11	15
0.028	0.010	2.8	9
0.022	0.016	1.4	2