placental alkaline phosphatase
Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia.
Related to placental alkaline phosphatase: Leukocyte alkaline phosphatase
placental alkaline phosphataseAbbreviation: PLAP
A form of heat-stable alkaline phosphatase released by trophoblast cells in the human placenta, i.e. during pregnancy. Cancers of colon, lung, ovary, and testes, esp. seminoma, produce the enzyme ectopically.
See also: phosphatase