My impression is that pregnancy tests can detect the presence of some level of hCG but won't reliably tell you about the potency.
I am not a medical doctor; any suggestions are meant to be discussed with your doctor.
Age: 60, Ht: 5'10", Wt: 154 lbs
Protocol: 3.2 mg TE subQ qd, 2.4 mg TP subQ qd, 20 mcg GnRH subQ 5.25x/d, 6.25 mg DHEA bid, 12.5 mg enclomiphene qod
Approximate levels (peak): TT: 700 ng/dL, E2: 30 pg/mL, DHEA-S: 300 ug/dL, SHBG: 30 nMol/L