Using Quantitative Hormone Monitoring to Identify the Postpartum Return of Fertility.

: The Marquette Method (MM) has been used for many years to track the postpartum return of fertility using the ClearBlue Fertility Monitor (CBFM). A new quantitative urine hormone monitor (the Mira Analyzer) was compared to the CBFM in one previous study, and using this pilot data, several women have started to use the Mira Analyzer in the postpartum transition to fertility. : This study was a retrospective, observational case series that analyzed hormone data on the Mira Analyzer during the postpartum period.