The dual analyte assay for the detection of the fertile period in women

Natural family planning

“…For the future, simple tests based on increasing levels of urinary oestradiol or the changing ratio of oestrone to pregnanediol (dual analyte) may help to improve reliability at this time in the cycle [33]. For NFP clients, this is the grey area in the cycle, requiring further research to improve predictability.…”

“…This test, called the Oveia Dual Analyte, is presently available for testing in the laboratory and has been shown to detect the beginning and the end of the fertile phase with reasonable accuracy [33]. Work is progressing, however, on a kit developed by Boots-Celltech Diagnostics Ltd. to measure the oestrogen/progesterone ratio over the menstrual cycle.…”

Hormonal indices of ovulation and the fertile period

“…Nevertheless, a variety of methods have been developed to identify the outer limits of the fertile period during each menstrual cycle, and a couple may use this information to help avoid or achieve a pregnancy by having sexual intercourse at the appropriate times [4]. More recently, tests have been devised which signal the time of maximum conception probability to aid the management of subfertile patients who wish to conceive [5,6].…”