Recombinant technology has allowed production of human erythropoietin with a greater purity and potency.
1 IU = 0.007858 µg
1 IU = 0.25849 pmol (assuming a molecular weight of 30,400 daltons)
1 µg = 127.25 IU
1 µg = 32.895 pmol
1 pmol = 3.8686 IU
1 pmol = 0.0304 µg