ABSTRACT
This study was conducted on 50 subjects [30 infertile and 20 fertile] taken from Sir Ganga Ram and Lady Aitchison Hospitals, Lahore and hormonal assays carried out at PGMI, Lahore. The infertile subjects were between 18-35 years of age and were married for more than 2 years. The results showed that 18 out of 30 infertile patients [64%] had luteal phase deficiency [LPD] and 12 out of 30 [56%] had normal progesterone levels. It was thus concluded that estimation of serum progesterone levels in infertile subjects is simple, easy but important investigation. It determines the presence of L.P.D or otherwise. This assay is closely correlated to endometrial biopsy results and therefore can be used as an alternate non-invasive procedure in the work up of infertility