NTX was detected to the end of the study for all subjects in Group 1 (MN + diclofenac + NTX, n = 6), with a mean AUC0 – 174 hr of 196.5 ± 37.7 ng•h/ml, which correlated with the impedance measurements that predicted micropore lifetime for approximately 3 – 7 days with application of diclofenac. Conversely, NTX was only detected until 72 hours in Group 2 (MN + placebo + NTX, n = 1).