Diagnostic Considerations for Luteal Phase Disorder and PCOS

Primary Diagnostic Considerations

If measured during luteal phase, progesterone increases 10-fold, so a 7x elevation may represent normal physiology or exaggerated luteal response, according to the American Psychological Association 1, 2
If measured during follicular phase, a 7x elevation of progesterone represents true pathological hyperprogesteronemia requiring further investigation, as stated by the American Psychological Association 1
Progesterone has anxiolytic and anesthetic properties through serotonergic receptor modulation, which paradoxically means elevated levels should theoretically reduce anxiety, not cause it, as noted by the American Psychological Association 1, 3

Measuring serum progesterone at symptom onset is useful for identifying luteal phase-induced symptoms, as recommended by the American Association for the Study of Liver Diseases 4
Repeat progesterone measurement with documentation of cycle day is necessary to differentiate between diagnoses, according to the American Association for the Study of Liver Diseases 4
Thyroid function tests, such as TSH and free T4, should be performed to rule out thyroid dysfunction, which can overlap with symptoms of luteal phase disorder and PCOS, as suggested by the American Psychological Association 2

Progesterone is thought to be protective against depression due to its anxiolytic and anesthetic properties, as stated by the American Psychological Association 1, 3
Absolute progesterone levels do not correlate with mood symptoms; rather, it's the sensitivity to hormonal fluctuations that matters, according to the American Psychological Association 2, 3

Pelvic ultrasound for polycystic ovarian morphology should be performed to confirm or exclude PCOS, as recommended by the American Psychological Association 3
Complete metabolic panel, including lipids, should be performed to assess metabolic function, as suggested by the American Psychological Association 3
Cognitive behavioral therapy for anxiety and stress management should be considered, as recommended by the American Psychological Association 3
SSRI should be considered if anxiety/mood symptoms are severe and persistent, as suggested by the American Psychological Association 3

Do not assume elevated progesterone is pathological without knowing cycle timing, as warned by the American Psychological Association and the American Association for the Study of Liver Diseases 1, 4
Do not attribute anxiety/mood symptoms directly to progesterone elevation, as cautioned by the American Psychological Association 1, 3
Avoid oophorectomy or hysterectomy for cyclic symptoms unless another indication exists, as advised by the American Association for the Study of Liver Diseases 4