here comes the accountant....

ok, let's consider capital costs of all the labwork, etc.
there will be some variable costs associated with processing "pregnant lady's urine" as well

now let's consider the cost of just buying the HCG

have you considered what your break even volume of manufactured HCG will be?

I have all the formulas for the calculation if you are serious, but....

....how long will your pregnant friend stay pregnant?