03/23/2026
Testing for perimenopause is tricky as hormones can fluctuate day to day. For this reason, it's best diagnosed based on your symptoms: irregular cycles + symptoms like heavy periods, PMS, irritability, brain fog & mood swings.
When it comes to hormone testing, the key is to have multiple tests over time so we can pick up on patterns and changes. A single test can't tell us if you are in perimenopause.
LH - Often higher in late perimenopause & menopause
Progesterone - Often declines in early perimenopause
Estrogen - May swing between high and low
AMH - May be low
There are also lots of conditions and imbalances that may mimic perimenopause or worsen symptoms such as thyroid dysfunction, PCOS, insulin resistance, blood sugar imbalances, nervous system dysregulation and nutrient deficiencies.
For this reason, if you're in your late 30's to early 40's and suspect you may be in perimenopause, it can be beneficial to see a practitioner for a comprehensive health assessment. Hormone testing is not always recommended.