A 26-yrs-old patient has had three consecutive spontaneous aboions early in her pregnancy. As pa of an evaluation for this problem, the least useful tests would be Hysterosalpinogram Chromosomal analysis of the couple Testing for TORCH infections Endometrial biopsy in the luteal phase Postcoital test

A major cause of spontaneous aboions in the first trimester is chromosomal abnormalities; however, the causes of losses in the second trimester are more likely to be anatomical in origin for which an HSG can be done, endometrial biopsy in luteal phase rules out luteal phase defect A postcoital test is useful for couples who cannot conceive, due to abnormal sperm cervical interaction, but does not address post-conception losses.