Lab test interpretation

Fern Phenomenon in Gynecological Smear Microscopy

The fern phenomenon (cervical mucus arborization) in a gynecological smear from a 42-year-old woman, indicating ovulation and high estrogen levels.

Stained smear: fern symptom (cervical mucus arborization)
Stained smear: fern symptom (cervical mucus arborization)

💕 A 42-year-old woman. The photo shows the characteristic “fern” phenomenon during gynecological smear microscopy. An incidental finding.

🥚 Mucus arborization is a sign of ovulation at peak estrogen levels.

🙏 The image was kindly provided by a clinical laboratory diagnostics physician, Anna Ivanova, Moscow.