Abstract: Recurrent pregnancy loss (RPL), defined as two or more consecutive clinically recognized pregnancy losses before 20 weeks gestation, is a prevalent and emotionally challenging obstetric complication. Studies suggest RPL affects roughly 1-2% of couples attempting conception. Elucidating the underlying causes of RPL can be complex, and treatment strategies aim to address various potential etiologies. One area of investigation focuses on luteal phase deficiency (LPD), characterized by insufficient progesterone production during the luteal phase of the menstrual cycle.