Plain Language SummaryThe gonadotropin-releasing hormone analogue (GnRHa) stimulation test has historically been used for diagnosing and monitoring treatment efficacy in children with central precocious puberty (CPP). However, this test is not always practical due to costs related to lengthy hospital or clinical testing, and additional injections that may negatively impact the child’s therapeutic experience. Therefore, alternative methods of assessing therapeutic efficacy would be valuable. This manuscript presents an overview of the studies supporting the suitability of therapeutic dosing of CPP medications (intramuscular [IM] leuprolide acetate [LA], IM triptorelin pamoate, and subcutaneous [SC] LA) for treatment monitoring. Four studies of injectable CPP medications have demonstrated that these therapies achieved similar stimulated luteinizing hormone (LH) levels compared to a traditional GnRHa stimulation test. However, the effect of SC LA (approved by the US FDA for treatment in May 2020) on LH levels has not been directly compared to those measured as part of a traditional stimulation test. As several studies have shown that SC LA has similar efficacy on the physical characteristics of puberty as IM LA, we postulate that therapeutic SC LA may also be used to monitor the response to CPP treatment, in place of a traditional GnRHa stimulation test.