Definition

Noun: 1. A coagulation factor formed in the kidney under the influence of vitamin K: This is a specific protein (Factor VII) in the blood plasma that is essential for the normal clotting of blood. Its synthesis depends on vitamin K.

Usage

• The term stable factor is a technical, historical name used primarily in medical and biological contexts, specifically in hematology (the study of blood).
• It is used to discuss blood coagulation disorders, diagnostic tests, or physiological processes.
  • A deficiency in stable factor can lead to a bleeding disorder.
  • The laboratory test measures the activity of stable factor in the plasma.

Advanced Usage

• Factor VII: This is the modern, standardized international name for stable factor. In contemporary scientific literature, "Factor VII" is vastly more common.
  • The patient was diagnosed with Factor VII deficiency.

Variants and Related Words

• Factor VII (n): The contemporary term for stable factor.
• Proconvertin (n): Another historical synonym for stable factor/Factor VII.
• Coagulation factor (n): The general category of proteins to which stable factor belongs.
• Serum prothrombin conversion accelerator (SPCA) (n): An older, alternative name.

Synonyms

• Factor VII
• Proconvertin (historical)
• Serum Prothrombin Conversion Accelerator (SPCA, historical)

Notes on Meaning

• The name "stable" contrasts it with labile factor (Factor V), which is less stable in stored blood. This distinction is largely historical.
• Its primary and only modern meaning is as Factor VII, a vitamin K-dependent clotting factor.

Noun

1. a coagulation factor formed in the kidney under the influence of vitamin K