. Author manuscript; available in PMC: 2015 Feb 15.

Published in final edited form as: Mol Cell Endocrinol. 2013 Dec 1;382(2):989–997. doi: 10.1016/j.mce.2013.11.008

Table 1.

FSH receptor binding assay comparison of hFSH glycoform preparations.

Receptor Prep.	Rat testis homogenate		Rat testis homogenate		CHO^hFSHR cells
Tracer	¹²⁵I-hFSH^21/18		¹²⁵I-hFSH²⁴		¹²⁵I-hFSH^21/18
FSH Preparation	ID₅₀ (ng)	Relative Potency (IU/mg)	ID₅₀ (ng)	Relative Potency (IU/mg)	ID₅₀ (ng)	Relative Potency (IU/mg)
^a Pit-hFSH^24/21	7.85	8,560	63.7	8,560	554.0	8,560
hFSH²⁴	5.83	11,526	69.6	7,834	253.1	18,737
hFSH^21/18	0.646	104,019	2.67	204,221	17.6	269,445
eFSH	0.468	143,581	1.43	381,309	10.4	455,985
hFSH^21/18:hFSH²⁴	9		26		14

Pituitary hFSH preparation AFP7298A, 8560 IU/mg.