| Hormone | Reference Preparation | Potency | Definition of Potency |
| FSH | 1st IRP-hMG (1960) | No official units | Activity as "mg" 1st IRP-hMG |
| 2nd IRP-hMG (1964) | 40 IU/ampule | 1 IU = 7mg 1st IRP-hMG | |
| 1st IRP-Pituitary FSH/LH for Bioassay (69/104) | 10 IU/ampule | Approximately 20 IU 2nd IRP-hMG | |
| 2nd IRP-Pituitary FSH/LH for Bioassay (78/549) | 10 IU/ampule | Based on 69/104 | |
| 1st IS-Pituitary FSH (83/575) | 80 IU/ampule | 5 - 80 IU (78/549), depending on assay | |
| GH | 1st IRP (66/217) | 2.2 IU/mg for pure hormone | Equivalent to NIAMDD-hGH-RP1 |
| 1st IS (80/505) | 4.4 IU/ampule | Based on 66/217 | |
| LH | 1st IRP-hMG (1960) | No official units | Activity as "mg" 1st IRP-hMG |
| 2nd IRP-hMG (1964) | 40 IU/ampule | 1 IU = 2mg 1st IRP-hMG | |
| 1st IRP-Pituitary FSH/LH for Bioassay (69/104) | 25 IU/ampule | Approximately 50 IU 2nd IRP-hMG | |
| 2nd IRP-Pituitary FSH/LH for Bioassay (78/549) | 25 IU/ampule | Based on 69/104 | |
| 1st IRP-Pituitary LH (68/40) | 77 IU/ampule | 15 - 75 IU (69/104), depending on assay | |
| 2nd IS-Pituitary LH (80/552) | 35 IU/ampule | 25 - 45 IU (68/40), depending on assay | |
| Prolactin | 1st IRP (75/504) | 30 IU/mg for pure hormone | |
| 2nd IS (83/562) | 53 mIU/ampule | 53 mIU 1st IRP (75/504) | |
| 3rd IS (84/500) | 53 mIU/ampule | 53 mIU 2nd IS (83/562) | |
| TSH | 1st IRP,human TSH (68/38) | 150 mIU/ampule | By definition |
| 2nd IRP,human TSH (80/558) | 37 mIU/ampule | 36 - 46 mIU (68/38), depending on assay | |