Table 1.

Comparison of Assay Methods Characterizing UC-II® Undenatured Type II Collagen

UC-II® Study Design	Research Material (Lot No.)	Undenatured Type II Collagen (in 40-mg UC-II® material)
		Per ELISA-Old Assay	Per ELISA-New Assay
Efficacy study - healthy adults*	1109006	10.8 mg (27.0%)	2.3 mg (5.8%)
Efficacy study – people with osteoarthritis **	1204004	10.8 mg (27.1%)	1.2 mg (3.0%)
Typical lot sold into commerce	1309029	10.6 mg (26.5%)	1.3 mg (3.3%)

ELISA indicates enzyme-linked immunosorbent assay

*Lugo et al. J Int Soc Sports Nutr. 2013;10:48

**Lugo et al. Nutr J. 2016;15:14