The study by Bagin' ska et al. examined urinary levels of NTs in children and investigated the effect of treatment with transcutaneous electrical nerve stimulation (TENS) for overactive bladder (OAB).25 Their results showed that although NT-3 levels were low in the intervention group and high in the control group before TENS treatment, they observed an inverse relationship after normalization with creatinine (Cr). Here, NTF3 is linked to overactive bladder.