Amniotic fluid ferning in early gestation.
Ferning of amniotic fluid was studied in early pregnancy. Arborization was demonstrated during the interval of 6 1/2 to 16 weeks by flame-drying. Air-drying yielded a spectrum of crystallization from none prior to 8 weeks to full ferning by 16 weeks. Technical differences are stressed.
D000653:Amniotic Fluid; D003460:Crystallization; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000175:diagnosis; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second