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Comparative USP potencies as measured by the chromogenic anti-Xa and anti-IIa assays (Hyphen Kits). Anti-Xa of heparin pools (A) and heparins mean (B). Anti-IIa of heparin pools (C) and heparins mean (D). The USP potency of PMHs and OMHs were comparable. In contrast, the USP potency of the BMHs were significantly lower compared to others (N = 3, *P < .05). BMHs indicates bovine mucosal heparins; OMHs, ovine mucosal heparins; PMHs, porcine mucosal heparins.
