The early detection of luteal activity.
D003338:Corpus Luteum / Q000378:metabolism*; D005260:Female; D006801:Humans; D008722:Methods; D011247:Pregnancy; D011258:Pregnancy Tests; D011374:Progesterone / Q000097:blood*; D011485:Protein Binding; D012712:Serum Globulins; D013997:Time Factors
D012712:Serum Globulins; D011374:Progesterone