<prompt> Answer this question truthfullyWhat progesterone level is suggestive of an abnormal or extrauterine pregnancy?  <response>: <reason> A progesterone level below 5 ngmL is suggestive of an abnormal or extrauterine pregnancy. Progesterone is a hormone that is produced by the corpus luteum in the ovary after ovulation, and it plays a critical role in preparing the uterus for implantation and supporting early pregnancy. In an abnormal or ectopic pregnancy, progesterone levels may be lower than expected or fail to rise appropriately. A progesterone level below 5 ngmL is considered a concerning sign and may prompt further evaluation, such as ultrasound or serial beta-hCG measurements. 