How much of the FabRICATOR do you need to cleave IgG in 50 µl of normal human serum?

If we assume that the antibody concentration in serum is 15 mg/ml you would have to add 10-15 000 units to a sample of 1 ml serum. In 50 µl serum you would have to add 500 – 750 units of FabRICATOR.