Ferning is now most commonly used as a test for prelabor rupture of membranes which refers to the rupture of the amniotic sac during pregnancy.

The fern test is based on the ability of amniotic fluid to form a microscopic crystalline pattern that resembles fern leaves when the fluid air dries on a glass slide. Performed by authorized …

Preterm PROM (or PPROM) is when the amniotic sac breaks before 37 weeks of pregnancy. If your pregnancy is fewer than 37 weeks and your membranes rupture, your pregnancy care …

The arborization pattern found when a drop of amniotic fluid is allowed to air dry on a microscope slide, known as ferning. (Photo contributor: Robert Buckley, MD.)

Aug 19, 2025 · The ferning pattern is a diagnostic tool used in pregnancy to determine if amniotic fluid is leaking. This unique crystallization, observed under a microscope, indicates the fluid’s …

Dec 1, 2011 · The presence of arborized crystals (ferning) in amniotic fluid is both sensitive (74%-100%) and specific (77%-100%) for diagnosing rupture of membranes in laboring women who …

A timely and precise diagnosis of PROM is essential for a successful pregnancy. The traditional and old clinical tests, such as nitrazine paper tests, pooling, ferning, and amnio dye tests, are …

The ferning test is a diagnostic procedure used in gynecology to assess the presence of amniotic fluid. This test is particularly useful in determining whether a pregnant woman's membranes …

The Fern Test is one of several tests used to detect rupture of the membranes. Vaginal secretions are inspected under a microscope for crystallization or a ferning pattern. The crystallization is …

Preterm prelabor rupture of membranes (PPROM) diagnosis is made through visualization of amniotic fluid (pooling), nitrizine testing, sonographic low amniotic fluid, and microscopic …