Hematokriini

Hematokriini is a term encountered in some discussions of blood biology to denote a proposed, hypothetical component or class of molecules that might influence the physical properties of blood. It is not an established entity in standard hematology, and there is no consensus definition in peer‑reviewed literature.

The name is derived from roots referring to blood (haima) and a notion of separation or regulation (krinein). In speculative discussions, hematokriini is imagined as a regulator of plasma composition or blood rheology rather than a single, defined biomolecule. As such, it may be described as a conceptual placeholder for factors that could affect viscosity, red blood cell aggregation, or the distribution of plasma proteins under varying flow conditions.

Because hematokriini lacks a universally accepted definition, references treat it as a theoretical construct rather than a concrete, identifiable entity. Some non‑peer‑reviewed discussions propose it could reflect a network of proteins, lipids, or signaling molecules that collectively modulate blood flow properties, rather than a solitary molecule.

Detection and study of hematokriini remain unresolved. There are no standardized assays or criteria, and any formal investigation would require establishing a reproducible signature in plasma or identifying candidate factors with a defined mechanism in blood flow dynamics. As of now, hematokriini does not appear in major textbooks or recognized clinical guidelines, and it is not acknowledged as an established concept by leading scientific societies.

See also: hematology, plasma proteomics, blood rheology.