kyestein

kyestein

A near-extinct term for a “film” that forms on the surface of a pregnant woman’s urine, which was described in the 19th century and may have corresponded to protein aggregates.

kyestein

, kiestein (kī-ĕs′tē-ĭn) [Gr. kyesis, pregnancy]
A scum or film on stale urine; formerly thought to be a sign of pregnancy.