Lab test interpretation

Fern Sign: Crystallization Test in Pregnancy Diagnostics

Microscopy of a vaginal smear: the phenomenon of cervical mucus crystallization in the form of fern leaves for diagnosing premature rupture of membranes.

Microscopic examination of vaginal discharge. Positive crystallization test in a pregnant woman. The test is based on the phenomenon of cervical mucus crystallization (the “fern” sign). Indirectly confirms leakage of amniotic fluid (as amniotic fluid also crystallizes in a “fern-like” pattern).

🙏 The publication was kindly provided by Ekaterina Nozdrina, Omsk.